I agree with Joejoe... Get your things and leave. No words. Do not tell her where you are staying.
If she begins to pull back, let her. She is going to be all over the place. One minute she will think she is free, the next she will realize the break up of her beautiful family, and how she is responsible. She will think of you and know that you did not deserve this. Let her spin... Now I am going to tell you what I tell every LBS on there threads. You now must be about yourself... You must take care of you. You have to take care of business and that business is you...
P.s. good job in telling MC that W needs to take care of her mess without you. Now is not the time for MC... W was lying to you and MC...