In 1994 I was twenty-two years old and working my first year in the NICU at St. Jude Memorial. I was young, terrified of every monitor beep, and convinced I was going to drop every fragile infant placed in my care.

A mother came in through emergency admissions late on a rainy Tuesday, hemorrhaging so badly the nurses at the triage desk were shouting for towels before the stretcher even cleared the doors. They rushed her straight to surgery.

Her baby, born at twenty-six weeks and weighing two pounds, four ounces, was left alone in incubator four.

The charge nurse, a stern woman named Brenda who had been there since the hospital opened, looked down the hallway toward the operating rooms and then at me.

“Keep your eyes on the monitors,” Brenda said, her voice clipped. “And if her saturation drops below eighty-eight, you page Dr. Vance immediately.”

She walked away, leaving me standing alone in the quiet hum of the climate-controlled nursery.

I did more than watch the monitors. The baby was so tiny her skin was translucent, like a peeled grape, and the plastic walls of the incubator seemed cold and empty. I slid my hands through the circular ports, slipped my fingers under her back and shoulders, and lifted her out against all protocol. She fit entirely in my two palms.

I held her for six hours straight. My arms went completely numb from the elbows down, but I didn’t dare shift my weight.

When she started to fuss with a tiny, mewling breath that sounded like a kitten, the only song I knew all the words to was You Are My Sunshine. I sang it in a whisper over and over until my voice gave out.

The mother survived surgery. They stayed in the recovery wing for a month, and I saw them from a distance once or twice when the mother was strong enough to sit in the rocking chair by the window. When they finally went home, I never saw them again. The charts were archived, the baby grew up somewhere out in the world, and life moved on through thirty years of night shifts, marriage, a divorce that left me quiet, and a quiet retirement in a small brick house with a overgrown hydrangea bush by the front porch.

Last Tuesday, a woman knocked on my door at three in the afternoon.

The sun was bright, catching the dust motes on my screen door.

I wiped my hands on my apron and opened it to find a stranger in a navy blue blazer holding a heavy leather folio. She was thirty-two years old, with dark hair tied back in a neat clip and eyes that looked directly into mine with a calm, heavy intensity that made my chest tighten.

She didn’t smile. She reached into her folio, pulled out a glossy, yellowed photograph, and handed it to me.

It was a hospital Polaroid from 1994. The corners were slightly curled. It showed a very young nurse in blue scrubs standing beside an open incubator, holding a microscopic infant against her chest with an expression of fierce, desperate tenderness.

The nurse in the picture was me.

The woman looked at the photograph, then looked back at my face, and said, “You sang You Are My Sunshine to me every Tuesday for twenty-eight days when my mother was in the ICU, and I need to know why you walked away the night before we were discharged.”