I can tell you this about the revising--I did not go into it intending to completely rewrite the manuscript. I have this feeling that each novel is as good as I can make it at the time I write it, so I didn't want to go overboard and do major surgery on the work. I did, however, want to clear up any glaring things that I've learned to do better since 1996. So I went through and cleaned up interior monologue in italics (ick! The book was filled with it, and now I really, really dislike it except in short, abrupt thoughts), as well as scrapping unnecessary adverbs and useless speaker attributions. I kept thinking, What if my students read this? They'd think I don't practice what I preach!
My Steeple Hill editor also had a couple of questions and concerns, and it was a simple matter to address those things to both our satisfaction. The updated medical information was easy to switch out, too.
It wasn't out of laziness that I didn't want to do a complete rewrite--it was more a matter of thread pulling. I've learned that if you pull a thread in a tightly-woven book, you're going to end up with a snag, a snarl, or a gaping hole if you're not careful. So I didn't want to tug on anything that was working just fine.
Tomorrow: The editing