Not sure what are your words , her words , your thoughts up there.
As far as trusting her ... lol .. nope.
Again, selling the house its not just about the financial gain/loss ..... and seems she is concerned about the kids as far as education but has she thought about the long term issues D will have .. most likely not .. she is in SelfishVille currently, let her live there till things are not working out.
As far as the Pain ... it hurts because it feel s like the walls are closing in and you are losing all you have held onto. Again .. out of your control and you do need to release it , and her, remember you can only control your actions and reactions to this mess. Protect yourself ... research what you can do .. its time to plan this with the thought that she is gone, its survival mode time.