It doesn't have anything to do with your feelings. It has everything to do with justifying herself. Some WW's won't admit to having an A.......even when the H is standing there holding pictures. It's crazy! WW's will leave their little kids, their MR, nice home, security, etc.......to be with a man that is nothing, or to live like GGW. She will blame the H for everything wrong in her life. She will lie to own her children, parents, and friends, to justify her actions. Most WW's want the H to tell the kids it was a mutual decision to split. They don't want their kids to know they were in an A......and should the kids find out, the WW blames the H, anyway.
You can't be her BFF and think you'll win her back. You can't score brownie points with her. Make your decisions based on your personal standards and belief system. Don't compromise your integrity, trying to get her back.
Sorry you are in this mess.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!