As they walked in, a sixteen-year-old girl named Lily was seated at a piano, playing from Braille sheet music, her fingers moving with the fluent confidence of someone for whom the instrument had never required eyes at all.

Grace stopped walking when she heard it.

Before she lost her sight, she had played piano every Sunday afternoon — jazz standards, old love songs, the classical pieces she had learned as a girl.

She had not touched a piano in three years, not once since the day the world went dark.

She stood in the doorway of that Brooklyn center, listening to a blind teenager play music she could not read with her eyes, and something moved in her that had been still for a long time.

“Mom,” Emily whispered.