Hang in there. I think you are doing the right thing. She will have to go through the A & then see how things fall out. She has to let her anger settle much more. She will most likely blast you for trying even if she has been starting to have doubts. It will be too threatening.
If she's starting to have doubts, you'll have time. I think as long as OW is in the picture, you need to let things be for her to take the initiative.
You seem to be teetering between moving on and terrified of doing so and wanting to take action. My general rule is that if I'm feeling a really strong urge to do something, the best thing I can do is not. Everytime I have, not only has it been the wrong thing for helping the sitch, but I stumbled over every part of the action. It is hard to say things the way you want, think clearly, or act skillfully while under the urge. That's been my experience, but others have reported the same.
Good luck. Unless you know something you haven't shared, I don't see that you are running into a point of no return other than possibly be going through a struggle that is you working through things as you approach some kind of decision about sticking it out or really moving on. That's just a little hunch, and I don't have a crystal ball.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15