You need to do some snooping because... IF she is entertaining thoughts of someone else and follows through, 1-you may be 100% through with her or 2-
you may still want to save the M. A lot hinges on this. Asking her point blank may get you the answer but be wary.... if they are in the "fog" they will lie
to you, almost every time. Just work on yourself and give her all the space she wants. If she wants to get in contact with you, she knows how.
But I would recommend if she does move out, you may very well deem this as the death blow to the M. Let her know there are consequences.
As Zillard stated, moving out is a strong indication there is someone else. When my XW started coming home on the weekends but not during the week
(this lasted 3-4 weeks), it gave me the time to detach and I decided "walking out on the M was enough for me to say, it is over."
When she returned home every night straight from work, she would chatterbox me about everything.... but the M. That was all I
wanted to hear about, the rest was garbage. Halfway through the 60 day wait for D, I left a non-negotiable on coffee table.
Two weeks before D final, I made her show her hand. It was what I thought it to be... and it nailed the coffin shut.
Do I know if she ever cheated, no I don't but walking out on me.... was the ultimate betrayal.
Check out these links and if you have questions about snooping (tech) view Weightlifters thread. Just Let Them Go Welcome TAM CWI newbies- please read this