My MIL use to call me to yell and insult. I changed my phone number 3 years ago best thing I ever did. Even now that RAH isnt drinking I still dont join him when he goes to visit, he takes the kids without me. I continue with my recovery and she will never try to get help, so to be in her company wouldnt be healthy for me. Please take care of yourself first and dont worry about your MIL says.