What does your husband say when you tell him all of these things?
What's his opinion on whether or not his mom's presence would be damaging?
Like above, I'd say you don't have to be there when she visits. But I'd be clear with yourself, with him, AND with her on what your boundaries are before she comes. Namely: no drinking in my house, no insulting you, absolutely none of the abusive sh*t she did.....and if any of them is violated, out she goes.
GL