The MC session was abbreviated. She mainly said that she didn't see where she could be of much help to us at this point since the third party was still an issue and my wife still had decisions to make in that regard.
Afterwards, W confided that her whole family had turned on her as a result of this (they picked my side) and she was feeling alone and the OM was the only person she could turn to right now. I told her if she couldn't give him up and try to make our marriage work, then she probably needed to leave.
This morning she told me that the OM would pay for her a place to live with my kids. I told her our kids were not leaving with her. She fumed over that one.
I don't know what the next step will be at this point. I expect she will be gone by the weekend. I had hoped it wouldn't come to this. I'm trying to keep my head up about this but its hard.