Sorry, my previous post was just a little bit of me ranting and raving!
RR, I would follow michelles instructions as closely as you can... do 180's, Get a Life, set boundaries, these are all things that will help you to be a better, more healed person when all of this is over.
As far as divorcing now, because of what shes doing, only do it if that's what you want. Shes acting very strangely out there in bizzarro land, don't allow her bad behavior to change the fundamental good person you are. You don't base your actions on a 3 year old's temper tantrum do you? Even if she really doesn't want to brush her teeth, she still has too, right? Why would you do it for a crazy person?
I think that you should do the work until you cant do it anymore. Otherwise I think that you will be left with a nagging suspicion that if you had only tried one more thing, things could be different. It was really important to me that I didn't leave a single stone unturned.
I guess I gave the wrong finger to the wrong man...