I know you've mentioned restricting her access to the house - is the house only in your name or pre-marital property or something? I have no idea on the legal aspect of it, but just want to note that if I understand right and she is just informally moving out, if she still has a stake in the house as marital property you might have trouble enforcing your lockout if she resists. Just something to consider.
Here's the scoop on that..She had to short-sale her condo in order for us to get out of it (I had moved into her place early in the R), which made her ineligible to be any part of a mortage for 3 years. When we got the house (still within those 3 years), everything "house" was put in my name alone. As we wouldn't be albe to get it if she was on it.
Now legally, I'm not sure what she is entitled to being that we are married. She could probably get 1/2 the equity if things get nasty and go down that road, but everything is fairly amicable right now. There are things I could do as well, so we both don't want to play that game.
I wouldn't say she is informally moving out. She bought a condo. She has a mortgage. A new address. She legally doesn't live in my house anymore. (would also have to look into abandonment as well, but trying not to go there)
There have been no lawyers involved other than my dads friend who only offered some info to me.
