Lots of reasons why she might not be able to lead a normal life. My BIL had double lung transplant this past Spring. Yes, he’s alot older than she is, but the anti rejection drugs, and the immune system suppressors will significantly reduce things she can do that you and I don’t even think about. Like, minor every day things that become no-nos because of the drugs.
Obviously, I don’t know a damn thing about her situation. Grains of salt, and all that. But my eyes were definitely opened to all of the changes necessitated by major organ transplants. And the risk of rejection somewhere down the line is always there, even with the drugs.