Well my friend, the good news is that at least she isn't aiming her Alien Death Rays at only you. Could it be that she's learned to act the way she did with her parent's? That maybe she's been this way all her life? That she has a knack for putting up one hell of a facade?
Remember the little chat we had in DC? We have the same W's I think. They act the same pretty much. I may have something that could help here. I cannot diagnose my W or yours but I can give you a website that helps us deal with the fallout from the hell of this certain disease.
Check it out and tell me if it helps. It has helped me cope a bit better and made me see that I was not crazy. The part in all your posts that got me was the one in which she denied saying something to you. That is what my W did to me and drove me insane. It is part of what makes women with this disease numb, they don't truly remember saying things.
Check out the link and read up a bit. I've been kinda anonomous about the subject for certain reasons. Check it out and tell me what you make of all this.