I am just about sure there are boundaries on visitation if there is danger in the home.

Everything she says is a bunch of "blah blah blah" You know her tactics, so you need to not get sucked into them.

let her take him out to dinner, on an outing, but if you feel that home is dangerous, he doesn't go there. And if you don't want her in your home, she doesn't go there. You have to show her you mean business. You are showing her weakness and she is going to pray on it. Strong boundaries shows strength.