I am sorry to see that your M has reached this point and I hope you can hold things together and come through ok.
If I may offer some observations from you previous post, I think your W offers you a big clue in her feelings with this line.
Originally Posted By: Tostada
" I fell out of love and I can't force my feelings. And quite honestly, when you act like this, it is really hard to even start to move in that direction.
She sees you as not having changed so why should she consider any sort of reconciliation.
From what I just read your W acts with pettiness and then you respond with pettiness, your actions then push her further away and W will only see your actions not hers. So in her eyes you are the one being mean and cruel not her.
On the other point of W admitting she made a mistake, I read it slightly differently, I read it as her just responding to you in a way to tell you what you want to hear, and not how she actually feels. (Tell him I made a mistake then it may shut him up).
I think your way forward is to try to cultivate a friendship with W even if she is being mean spirited and petty. That doesn't mean bow to her every request, but it does mean you have to keep showing her your good and attractive side even in the face of hostile behaviour. It will be hard work but that's what you need to do.