Very startled to hear about the atrial fibrillation.
As for Terry Pratchett handing things over to his daughter, well, I know she's already a writer, but save for one novella, she's really only written for media other than books, specifically video games. This is one of those things where anything can happen, from being spectacularly bad to being so spectacularly good, she would equal, or even surpass her father. The latter, obviously, is what I hope for. But even then, such a decision isn't going to be free from controversy. I heard that Albert Uderzo's children are objecting to him allowing the continuation of
Asterix after he dies, and of course, we have the controversy over Brian Herbert and the new
Dune novels.
I hope Terry Pratchett knows what he is doing. It's his decision, of course. And he's still got enough of his faculties left to know that this is one of those 'sound mind' deals.