Okay, so you've learned a rule of thumb - don't bring up R talk. Ever. Even if she brings it up, don't be too enthusiastic. This is a mistake I've made over and over and wish I'd handled things differently.
So you're in contact with her family/coworkers? Why is it good that it's about time? Have you accepted the negative dynamic of the R, or at least your part of it, and tried to figure out why things got to that point?
She may act like she's at peace, but it's never that easy. She's as back and forth as you, except she's been thinking about this a lot longer than you have. She may think she's at peace, but there's always room for doubt. So show her something new. Problem is, you can't change for her, you have to change for you. Otherwise it isn't authentic. Who did she fall in love with? Why? Are you still that person or have you changed?
Pretty impressive weight loss! I know how it is - I lost 40 lbs in the first 2 months, down from 34 to 31. None of my clothes fit and I can only afford to buy so many new things. Oh well, I feel pretty good - imagine you do to.
I know what you mean about psyching yourself out. I keep thinking I've reached a good spot and then the next wave comes. But it does get easier. Keep active, keep yourself occupied, and most of all, concentrate on making YOURSELF happy - the rest follows.