It's been four years since I was separated from my mom, and I've thought about her constantly.

Even though my stepfather was a match too, I saw my mom's hesitation. So, I volunteered to donate bone marrow to my sister.

The doctor advised against having a child donate—it could have long-term effects.

My stepfather offered plenty of reasons.

I said nothing and quietly climbed onto the operating table.

A long, thick needle stabbed into my spine.

Treating my sister had already cost a lot of money, so to save costs, they didn't give me anesthesia.

I was in so much pain I nearly passed out, but I still couldn't help...