My heart goes out to you. My state has a 90 day wait as well, and whereas my wife hasn't actually filed the papers, it's just a matter of time if I can't stop this train.
I remember reading on another thread something about boundaries and that it is not terribly bad to establish boundaries while separated. Should you lay down the law with regards to the money? Establish boundaries? Be respectful of her privacy but make it clear that you will not finance her gambling addiction? Seems kind of harsh but since you feel that you are being taken advantage of, standing up might not be a bad option. Sure she'll get miffed, but do what's right for the kids. Her anger will subside, I think.
Just a thought.
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