The more I think about it the more I am sure she is going through an MLC.
I'm sure others may disagree with me but I don't think this matters at all. What you should be doing doesn't change no matter what's motivating your wife's choices.
The tough thing is that the LBS is really in no position to diagnose the WAS. The behaviors you see can't be separated as being due to the breakdown of the relationship or a breakdown of the person.
I fear that searching for answers or plans in self-diagnosing your WAS is a can of worms that doesn't lead you anywhere productive.
Stick to DB -- it doesn't matter if your W is MLC, a WAW, Batshit Crazy, or completely rational and just "done". What you should be doing is exactly the same in all of these cases.
Acc
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015