ABC it sounds like you handled things as well as could be expected. Like MC Jack as well, my WW responded the same way. Seems she had tried to end the A, was riddled with guilt but still couldn't walk away. Almost like a drug addict.
We are working on R, which is a struggle, but will hopefully pay off in the end with an improved M. In the reconcilliation section at the top there is a thread on positive R stories, I find this helpful when I'm down. Best of luck as you work to repair your M, keep posting, keep reading, and take care of yourself the road ahead is long.