I feel like I am reading parts of my own life. My wife is still living in our house but has "threatened" to separate and makes a point to tell me she is angry at me for not responding to her requests over the years to improve our relationship. In my mind she did nothing more than read books -- took no action, but then again neither did I. I am trying to follow the advice that everyone seems to be giving here -- be confident, GAL, only talk about feelings when asked. But I feel like a whipping boy, just take it all in the chin, don't get defensive and try to be a friend. How long can I take this before I just ask her to leave? Or should I just keep taking it until she either decides to leave or work on us?

I think you're doing the right thing, the thing we should all be trying to accomplish. Thank goodness for this forum or we'd all be in the asylum!