My lovely wife is a live-liver-transplant kid and I too hope she outlives us all. Alas the 'organ preserving' drugs (the ones you take to help kidneys handle immunosuppressants) have difficult side effects. I'm not talking incomfort or pain, but pregnancy-terminating. Not the best way to end your first pregnancy...

And as it's 'just' prevention, it's hard to know whether it will reliably improve this individual outcome...