Re: Wife wants to move out!?!?!
I think you're being irrationally nice. What about you. If you act the doormat, even if you get her back, unless this is a one-off crisis for her, she will do this again - leave you in limbo while she takes her time to access what she wants.
However, I don't see this as a one-off. The fact that her mother's divorce effected her to the point of needing to leave you shows she is profoundly damaged, and not really interested in your feelings.
Your relationship is unbalanced. She makes you wait for an answer, and you... wait. You need to value yourself as much as she values her self. In the final analyisis, Self is an illusion (so my wife tells me), but if you are going to have "selfs" one should not be place higher than another.
If it were me, I would say move back or divorce me. You've got a week to decide. After that, I would start dating.