Our triplet sister died when we were eleven—until a box arrived on our 21st birthday that revealed she might not have been gone at all.

opened the envelope.

“Dear Gia and Leila,

If you are 21, that means you are grown-ups, which is weird because I still think of us as 11. Maybe you are wearing fancy shoes. Maybe you have jobs. Maybe one of you is married, which is disgusting but fine.”

Mom laughed through her tears.

I smiled and kept reading.

“I need you both to promise me something. Do continue reading …