Not a vet. I'd say that for a beginner, you did very well. You seem to be good at learning and applying new lessons. It will serve you well.
I think you still pursued a little too much, but maybe you can undo that later, since you're very early in the sitch. What attracts the WAW eventually is the impression of losing something great. That means you need to look great and like she's losing you. Be yourself, be natural, but also be the best yourself you can be.
A lot of what she says about the marriage being over might be sincere, but it's also script. Use it to help you detach and focus on you. Remember that DBing is pretty much doing the same thing as if you were giving up, except that you're keeping the road to reconciliation open.
Have a healthy reflection on whether you were happy in this M. Yes, she took the initiative, but it's also possible that she has opened a door for you to a much better life. If it's too hard to consider now, give yourself a "safe space" of 10 minutes where you really consider it, knowing you can come back to your current thinking afterwards. It works for me.
Good luck.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.