Read my email, she is just off the hook isn't she.
Get your shitt out of that house and RUN......as far as you can from her insanity. In fact at this point I would even have your lawyer set up child swapping at a local and visble high traffic area, like a McDonalds or something.
Don't put yourself in a position of being alone with her at all. Bring a friend with you to the house anytime you go there.
She is losing it my friend and I do not want to see her do something stupid that will affect you. Let her stew in her own anger.