Sorry to find yourself back here. I don't know if there is such a thing as "normal", but to me your W's actions seem quite a bit out of the "norm". While I think people of the opposite sex can be friends, I don't think that works for most people. If both of you were friends with her boss/co-workers, then maybe it would be slightly different.
It sounds like either your W is or wants to have an EA with her boss. Alcohol induced parties open up so much more for things to really go wrong.
Did you move for her job or yours?
It really stinks that your W puts so much energy into her work life and leaves nothing for home.
Even though you are thousands of miles away, please know that we're here for you and we'll be your support system. Come and post often.