It's good that your W agreed to MC, although mine did too (she's WAW) and finally agreed after the third that she wasn't actually going to work on the M... just wanted to talk to a C with me...
So you feel guilty. I get that it's tough.
Is your W asking for space? Why did you move out? I'm guessing she is going to have a really hard time trusting you. What have you done or what has she asked you to do, regarding the OW?