In the book there is a "Believe none of what they say and only 50% of what they do line" Tuck that one in your pocket ... it is usually accurate
Ok, so here is the thing, you can not control what she does, who she sees, what she eats, the color of lip gloss she decides to wear tomorrow. All you can do from this point till forever ... is control your actions and reactions.
The reason she moved out on the surface may have been because OM threatened to end contact .... but what was the underlying reasons .. things she complained about in your M, things you did ... justified or not, this part is the area you need to explore a bit .. the reasons she looked elsewhere for needs that were not being met in the M.
In my case .. was a long line of little things, resentment builds, like a volcano finally the eruption and it takes a bit to see the reasons, to realize there were things I could have done better ... things she could have done better but this point in the game they have checked out so we need to fix our side of the street ..... maybe they take notice, maybe they don't ... regardless one must keep his side of the street clean.