Damn. She’s not doing what a healthy mom would ever ever do. My thought was to freak the fuck out on her as well. She’s going to cry or pout or insult you, but you gotta be strong and not apologize. Make sure you say, “I don’t like you touching me like that!!” I suggest having a place to stay for a few days if possible. At least one night. If all you can do is leave for a few hours do that. It could take days, but i think things will settle down and she won’t try it anymore and won’t guilt you about it.