The Other Twin

When we were little, brushing our teeth took ninety seconds. My sister worked the caps, I ran the tap, and both hands knew the route from cup to mouth without either of us looking down. She spat first. I leaned us in. She caught the towel while I shut off the water. We were so good at it that our mother sometimes stood in the bathroom door and watched with the soft, useless pride other parents saved for piano recitals.

By fourteen, the same sink could hold us hostage.

That morning, my sister had the left hand pressed flat below our collarbone. The ache had started as a bruise with no bruise, then spread until the seam of our pajama shirt hurt. Our chest looked fuller beneath the cotton. Under my own chin, three dark hairs had become eleven. I had counted them while she slept and then felt ashamed, though not ashamed enough to stop being pleased.

“Razor first,” I said.

“Soft bra first.”

Both were waiting beside the soap. She moved the left hand toward the folded bra. I moved the right toward the razor. Our shoulders turned in opposite directions, and the pull through our spine made both arms stop.

“It takes thirty seconds.”

“It hurts now.”

I looked at her in the mirror. Her hair was pinned away from her face with two yellow clips. Mine stuck up where I had slept on it. Between our necks, the pajama collar had twisted sideways.

“Fine,” I said, but too late to make the word kind.

We put on the bra. It did not belong to her half of us, because there was no half to put it on. The band went around our ribs. I felt the pressure when she fastened it. She felt me stiffen.

Afterward, she held the razor under the hot tap while I shaved eleven hairs from my chin. She did not complain. That was how I decided we had been fair.

I was still using that arithmetic in October.

The next time the sink held us was the morning we caught the early bus. At the mirror, she chose a green shirt that curved instead of hanging from us. I kept the shadow on my jaw. This was supposed to count as one choice each. She tugged the hem smooth; I opened our jacket halfway. We looked like an argument assembled from the lost-and-found.

“The jacket’s crooked,” she said.

“The shirt’s doing that.”

“No, your hand is.”

I fixed it. Our mother, kneeling by the front door with one of our shoes between her knees, pulled the laces tight.

“Bus in six minutes.”

“Five,” I said.

“Then you’d better not spend one correcting me.” She double-knotted the lace and stood. “Lunch is in the front pocket. Pads are in the inside one.”

My sister said, “I put them there.”

“Good. Move.”

Outside, wet leaves pasted themselves to the pavement. Walking had once been our best trick. We did not each own a leg; a step began as a shift we both had to feel coming. When we agreed on the destination, the agreement traveled down our back and gathered itself into knees, ankles, toes. Since our hips had begun changing, the old signals arrived at the wrong angle. We had to think about curbs.

At the bus shelter, a man in a reflective vest held the gate for us. His eyes went to our chest, then to my sister’s face.

“Morning, girls.”

“Morning,” I said.

My sister’s head turned toward me. “He wasn’t talking to you.”

“He said girls.”

“Exactly.”

The bus hissed at the curb. I shifted forward before she did. She was still looking back at the man when our left foot met the step, and the right struck the metal edge. Pain went up both legs. We caught the rail with both hands and hung there for one ugly second, our weight behind us and the line of students behind that.

“You okay?” the driver asked.

“We’re fine,” I said.

“I’m not,” my sister said at the same time.

The driver got out of her seat. She planted one hand under our elbow, waited while my sister looked down at the step, and said, “Ready?”

My sister nodded. I waited for the breath we used before stairs. We climbed.

At the back of the bus, she examined the darkening patch on our shin.

“I wasn’t trying to trip us,” she said.

“I know.”

“You moved.”

“The bus was here.”

She pulled the jacket closed over the green shirt. “The question can get here before your answer once in a while.”

I watched rain stitch the window. By lunch, I had converted the fall into a problem with preventable inputs: wet pavement, changed balance, distraction. I did not include myself. I did not yet understand that answering for both of us was also a kind of movement.

The third time the sink stopped us, there was blood in our underwear.

Our mother had explained what might happen. There was a box beneath the sink, pain medicine in the cabinet, a heating pad folded in the linen closet. Preparedness turned out to be small beside the fact itself. The cramps had woken both of us before dawn, squeezing low in our shared belly and releasing just long enough for hope to become stupid.

My sister braced both hands on the porcelain. “Get Mom.”

“We know what to do.”

“Get her anyway.”

I called. Our mother came in wearing one slipper and carrying her glasses. She took in the underwear, my sister’s face, my face.

“Bathroom first,” she said. “Then heat. School can wait.”

She showed my sister where to place the pad and gave me the job of holding the waistband out of the way. Later, with the heating pad across our abdomen, my sister asked for toast. I wanted the curtains shut. She watched a cooking video with the sound low while I tried to sleep through cramps that felt insultingly ordinary.

Over the next three months, ordinary things multiplied. Shirts that fit at breakfast chafed by last period. Sweat gathered beneath new folds of skin. My voice dropped more than my sister’s, though hers broke sometimes in the middle of a word and made her go silent. Hair thickened on our legs and under our arms; more appeared along my jaw and a faint strip above her lip. She plucked that strip. I asked her not to use my good tweezers. She said we had one face each but apparently communal tweezers.

We still made jokes. We fought over music while folding laundry. She made me watch six episodes of a baking competition and then fell asleep before the final. I finished it and lied about who won. She knew before breakfast.

But the old system of my day and your day had depended on choices ending when the day did. The green shirt came off. My stubble could be shaved. Our chest did not flatten overnight, and bleeding did not become hers because the calendar had her handwriting on it.

Our mother called a specialist after each of us asked her separately. She showed us the appointment time on her phone.

“Thursday, three forty,” she said. “I can collect you from school.”

“What kind of specialist?” my sister asked.

“The kind who read the scans your regular doctor sent and admitted they need more scans.”

“That’s not a kind.”

“It’s the kind we have Thursday.”

At the clinic, the receptionist handed us a clipboard with one form. Our mother handed it back.

“Two patients,” she said.

The receptionist looked at the single insurance number, then at us. “There’s one chart.”

“Put two questionnaires in it.”

The woman considered the waiting room behind us, where no one had volunteered to become less impatient. Then she found another form.

We completed them one at a time because handwriting required both hands to agree. My sister answered first. I steadied the page and let her choose the words. Under WHAT CHANGES ARE TROUBLING YOU? she wrote, People look at him and decide I’m not here. Then she added, Hair. Voice. Speed.

I wrote, Chest development. Menstruation. Unpredictability of final traits.

She read over my shoulder. “Final traits.”

“It asks what troubles me.”

“You make us sound like a building proposal.”

“You wrote speed.”

“Speed is what I mean.”

The clinician brought the two forms into the examination room and placed them side by side on her desk. She spoke slowly, but not in the sugary way adults sometimes used when they thought our body had made our minds younger.

“I’ll ask some questions twice,” she said. “Not because I expect the answers to match.”

“We’ve already compared—” I began.

She lifted one hand, not high. “You can go first when I ask you.” She turned to my sister. “What change would you most want to slow right now?”

“The hair. On our body, and this.” My sister touched above her lip. “And my voice. It goes wrong and people laugh before I finish.”

The clinician made a note. “What change would you be sorry to slow?”

My sister’s hand moved to our sternum, then dropped. “Our chest. Maybe. I don’t know yet.”

“All right.”

Then the clinician turned to me.

I had prepared. “If development continues at the current rate, I want to know the likely range of outcomes, the probability of further breast growth, whether menstruation will regularize, and which interventions preserve later options.”

My sister shifted in the chair. Our knee knocked the underside of the desk.

The clinician waited. “Which change would you most want to slow right now?”

“Breast growth.”

“And which would you be sorry to slow?”

I rubbed the place beneath my jaw that was rough by afternoon. “My voice. The hair.”

That answer looked very small beside all the ones I had brought, and it was the first useful thing I said in the room.

The clinician showed us a diagram made from our own scans. Most of it was lines and pale shapes that meant little to me. She kept her pen on the parts that mattered. One circulation. Several kinds of tissue responding at different rates. In our particular body, she said, a monitored course of temporary suppression might slow the signals driving further changes. It would not assign one set of effects to my sister and another to me. It would not reverse what had happened. If we stopped, development might resume, but she could not promise its timing or direction.

“How much time would it give us?” I asked.

“I can give you monitoring intervals. I can’t give you a guaranteed future.”

“But on average—”

“Your scans aren’t an average.” She checked the clock. “There are also reasons to continue without medication. There are costs either way. I don’t need a decision today.”

My sister had gone still. The clinician laid her pen sideways across the diagram and waited.

Finally my sister said, “If we pause it, I don’t stop being a girl?”

The clinician’s gaze stayed on her. “The medication would act on your shared body. I’m not treating either of your identities.”

My sister nodded once. I had a better, more complete version of the question in my head. For once I left it there.

The worst fight happened six days later, over a charcoal shirt.

It was large enough not to pull across our chest. That was why I had put it on the bed for the school winter concert. My sister had chosen a red top with a square collar and sleeves that made lifting our arms difficult. Neither was formal enough for her and both were too noticeable for me.

“Charcoal,” I said. “We’ll be onstage for nine minutes. It reduces the number of things people can decide from a distance.”

“About you.”

“About both of us. Fewer wrong guesses overall.”

She picked up the red top with our left hand. “I want this one.”

“You’ll hate it when they stare.”

“They stare now.”

I began unbuttoning the shirt we wore. She did not help. The right hand fumbled the third button while the left stayed closed around red fabric.

“Can we solve the immediate problem?” I asked. “Nine minutes, lower visibility, no restricted shoulders. Then in January we reassess after the next appointment.”

“You’ve spent me again.”

“What does that mean?”

“My shirt. My chest. My nine minutes. They all disappear inside your total.”

“There is no version where either of us gets everything.”

She looked down at the red sleeve gathered in our fist. “I know.”

“Then help me.”

“No.”

I pulled the open side of our shirt. She held the other. The cloth tightened behind our necks. We had undressed through arguments before, but not with both of us insisting our body go somewhere different. Our elbow caught under a sleeve. Balance tipped toward the dresser, and one knee locked while the other tried to bend. The corner rushed at us in the mirror.

“Stop,” my sister said.

I was still talking—something about falling if she would not coordinate—when our palm slapped the dresser top hard enough to rattle the hairbrushes.

“Stop.”

This time I did. We stood half inside the shirt, breathing too fast. Our shoulder burned where the seam had twisted. The concert was in forty minutes. The red top lay on the floor.

Our mother appeared at the door. She saw the trapped elbow and came close, then waited.

“Help?” she asked.

My sister said yes. I could not get enough breath for the word, so I nodded.

Our mother freed the cloth from behind our necks. She did not ask who had started it. She laid the charcoal shirt on the chair, put the red top beside it, and set one of her soft black cardigans between them.

“I’ll call the school,” she said.

“We can still make it,” I said.

“You can. You don’t have to. Tell me in ten minutes.”

After she left, my sister sat us on the bed. The sudden drop made the mattress springs complain.

I tried again. “If we list the costs—”

“I need it to stop getting faster.”

“That doesn’t decide the shirt.”

“I’m not deciding the shirt.” She rubbed our caught shoulder. “I need this to stop getting faster.”

The clinic packet was on the desk. Until then, I had treated a pause as her proposal and therefore as something I had to measure against my losses. I pictured my voice fixed where it was, a beard that might never become more than a little roughness along my jaw. I pictured our chest continuing to change while I collected better numbers. Neither picture belonged to her. Neither belonged only to me.

“I don’t want to lose what’s happening to my voice,” I said.

“I know.”

“And you don’t want to lose—”

“Don’t finish it.”

Our hands rested open on our knees. I let them.

We missed the concert. Our mother brought dinner upstairs on a tray because neither of us wanted the kitchen table. She put down two forks with one plate of pasta.

“Ten-thirty bedtime,” she said. “Appointment packet’s on the desk. Cardigan can go back in my closet tomorrow.”

At the door, she stopped.

“Mom?” I said.

“What?”

I had wanted her to tell us what was fair. My sister was watching the steam rise from the pasta.

“Can we use your phone after dinner?” I asked. “For two recordings.”

“Yes.” She left the door open a hand’s width.

We made the recordings separately. Privacy was impossible, but authorship was not. My sister spoke first while I kept my mouth shut and looked at the dark window.

“I like our chest changing,” she said into the phone. “I don’t like bleeding, but that isn’t the same thing. I hate the hair on my face. I hate people hearing my voice crack and looking at him. I don’t want every week to take something before I know if I wanted it. I want a pause.”

She stopped the recording herself.

On mine, I began with likely outcomes, crossed them out aloud, and began again.

“I like my voice. I like shaving, which is stupid because I’ve cut my chin twice. I don’t want more chest growth. I don’t want another period. I keep saying later will be easier to decide, but I’m the one asking for forecasts while everything keeps happening. I want a pause too. Not forever. Now.”

At the second consultation, the clinician listened to both recordings. She asked my sister whether “pause” still meant the monitored temporary course they had discussed. Then she asked me. Two yeses entered the same chart. Our mother scheduled the first follow-up before we left.

The treatment was not a clean door shutting. Weeks later, our chest still pressed against the soft bra. My chin still needed shaving. Blood might come again before the clinician could tell whether the course was slowing anything. At school, strangers continued to pick one of us from a distance and misplace the other.

But the mornings stopped feeling like a race against a body that had started without us.

At the sink in February, my sister set down the tweezers beside my razor.

“Hold still,” she said.

“You’ve got one.”

“It’s one too many.”

I leaned our weight toward the mirror while she plucked the dark hair above her lip. Her eyes watered.

“Done,” I said.

“I know.” She rinsed the tweezers. “Your turn.”

She held our chin steady while I shaved. Halfway through, our mother called that the bus was in four minutes.

“Five,” I called back.

My sister reached for the yellow hair clips. “Don’t start.”

I wiped the remaining soap from my jaw and left one side rough. She clipped back only half her hair. We grabbed our bag, missed the towel, and went.