MHL, what gave me the "chill" you describe is her saying the part about not wanting YOU to revert to old habits...because that, coupled with her not talking about herself anymore, again made it seem like she was externalizing the problems of the marriage on to you. I had this bizarre flash, when I read that, of my XH someday saying the same thing to me and it all but enraging me ;-) because I know very well that I've made a ton of good changes for me and he's in Stucksville from what I can tell.
BUT.
I also admit that I'm reading that part as a spouse scorned. There are a million reasons that a person might say that and NOT the other stuff, and one may frankly be embarrassment or even care. As in, she can see that you've become a better person, and she is almost indicating that she doesn't want to fool with YOU and YOUR life, which is a different way to view that statement.
In any case, what I'm happy to hear is that you were unaffected by this and staying with your path. You have a really good sense of detachment about her now and that's going to keep serving you well.
Glad to hear from you.
M45 Bomb 6/09; EA 6/10; Divorced 1/11 Proud single mom of 7 little feline girls and one little feline boy "Fall down 53 times. Get up 54." -- Zen saying