My W told me the other night that there was a "slim" chance of reconciliation before I crashed her recent vacation and that I "completely blew any chance" of reconciliation once I filed for D.
Good for you calling her hand on this B.S. She is simply finding any way she can to hit you below the belt. That is why I don't think it was not an "accident" that your D3 said that "Mommy likes OM". Sounded to me as if she had been coached.
Wish I could think of something new to tell you but right now I can't think of much positive. Your W is headed for a big fall, as you know....and I hope you will be able to deal with it when it happens. I think if you were to push her toward the OM that things would tumble down even quicker. I don't know if you can do that, but the sooner she sees that you don't want her any longer--and she turns to OM, the sooner she is going to start getting a taste of reality. There is no way OM is going to support her. He's been on his own too long and he doesn't want your W (or anybody else) except as a booty call. Right now your W thinks you are mad and she is doing things to spite you, but if she thought you were happy to be free of her and looking forward to being single, then she may get her attention directed in the right way. At least she would be surprised at you....and it would be a 180!
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!