I was sorry to read about W pushing on for the D, despite the nice progress and changes that she admits noticing. It plain stinks that the WAS gets in this rut/track toward D, and can't seem to pull themselves out of it.
The R will continue in some semblance b/c of D3, and I hope that W will see that the grass is not greener on the other side of the fence. I've noticed in my sitch that when W visits with close or extend family or friends, usually she comes back with greater verve or determination regarding the D or severing ties. I imagine that these loved ones likely are giving her pro-D and "move on" advice, as they do not want to see her in pain/distress. Michelle writes about this in DR. Hopefully, things will calm abit if she can spend time with you and be reminded once more of your positives.
Regardless, keep your eyes on the R, UD, in terms of DBing, rather than the M. And stay focused and hardworking in terms of yourself.