Hmm, Jeff, the idea of her as a prostitute is an interesting one and it would explain the anger. But she made the decision to do it, so she should take responsibility for it.
I am sorry that it has gotten to the point where a separation looks to be the only option. I think you have hung in a long time and you have suffered her coldness and snide remarks throughout.
You have tried a lot of things, of that you should be proud. I think that maybe a separation may lead her to look inward a bit. Or at least I hope it does.
Crunching of numbers is what I am doing this weekend, slso. Not a fun task and it seems to be a futile one in my case.
Anyway, you deserve some happiness, some affection, some acknowledgement - we all do.
You know we will all be here for you no matter what you decide.
