FOR MY WHOLE LIFE I BELIEVED THE TINY BLUE FLOWER ON MY MOTHER’S WRIST WAS JUST AN OLD TATTOO — THEN A HOSPITAL NURSE SAW IT AND WALKED OUT TO CALL SECURITY.

I’m so sorry I frightened you.

I just knew it mattered more than anything I’d ever seen.”

My mother, who had spent fifty years terrified of that flower being recognized, looked around a hospital room at a doctor she had possibly carried to safety and a nurse whose grandmother had done what she did, and something in her that had been clenched for half a century finally let go.

“It’s alright,” she said. “You didn’t frighten me, child. You found me.

I’ve been hiding this flower for fifty years.

I forgot it could also be a way of being found.”

The knee replacement happened the next week.

Dr. Okafor didn’t perform it — it wasn’t his specialty — but he was in the building for all of it, and he visited my mother every day of her recovery, and slowly, over those days, the two of them pieced together what they could.