Throwaway because my fiance follows my main. I (31M) and my fiance (29F) are getting married this March. We’ve been dating for three years and I honestly think this is the happiest I’ve ever been in a relationship. I would say there were no issues until about 6 months ago when her parents got divorced basically out of the blue. My future MIL and I have never gotten along I think because she has always looked down on me for dropping out of high school to work. She has never said anything explicitly but it feels like she is always making little comments on it. Last Christmas she made a joke about me being unable to read a children’s book that I was reading to her grandson. I wish I was kidding. The divorce came out of nowhere and my fiance went into a really dark space. For a while she talked about postponing the wedding and even at one point admitted she didn’t know if she even wanted to get married anymore . We worked through it and she decided we would continue as planned, though I promised my support regardless. A few days ago, my future MIL called me and said she had to talk to me about something and I couldn’t tell my fiance. It was really weird but I decided to go along with it because to be honest I was surprised she even wanted to talk to me. Our wedding has a strict no plus one policy because we want it to feel more intimate and we really can’t afford that many people anyway. However, she told me she had a friend that she really wanted to come and was hoping I could make an exception. When I started to ask question she got really upset and said she needed to have a friend there because it was the first time she’d be seeing her ex-husband since the divorce. This made sense and there’s honestly enough going on already so I just said it was fine. Yesterday, she called me again, saying there was something I should know in case I had to “play damage control”. She said that her friend was really a guy she had been dating, who she admitted was only 26. I told her there was no way he could come and she would either go by herself or not go at all. I wasn’t really being that serious with this because it’s her daughter’s wedding so I was sure she’d just agree to go solo but clearly I was wrong. She started screaming at me, claiming that I was ruining this family and that she had to be at the wedding. As I previously said, this divorce wrecked my fiance and I was not about to let it ruin her wedding to. I told her she wouldn’t be coming and that’d I’d be taking back her invitation and then I hung up. Less than 5 minutes later, my fiance called me, asking why her mom was no longer invited. I told her everything and she got really mad at me, saying I had no place to decide if her mom could come to the wedding or not. She knows about the boyfriend although she refused to talk about it and focused only on the fact that I got rid of her mom’s invitation. I gave her the final say because at the end of the day it’s her mom. I was trying to help her but she still won’t talk to me because I refuse to apologize. I know how hurt she was by this divorce and though she says she’s fine I’m worried about her. I want this day to be special and I think her mom has ruined it. I’m tempted to just tell her I’m sorry and move on but I already know this is going to take all the magic out of our wedding. So please let me know AITA?