What would you do?

You're a successful business owner, happily married to your high school sweetheart and You have two young children.
One day, doctors diagnose your wife with a rare, aggressive illness. Treatment options are limited, and only an organ replacement could cure it.

Simultaneously, your best friend, Alex, a single father, is involved in a fatal car accident. His 9-year-old daughter, survives but suffers severe organ damage, requiring lifelong care.

Now here is the twist:

A compatible organ donor is found for your wife, but the same donor is the only match for your friends 9 year old daughter.

What Would You Do?