My wedding is 4 days away. My FH’s father recently had surgery. He stayed over at his parents house to help because his mom couldn’t totally take care of him alone. He spent a few nights there. Friday night, I went over because have a lot of planning left to do. Until now, I haven’t tried to involve my MIL too much because she can’t stand when someone disagrees with her opinion. If she asks, I share. But I learned previously to not share too much. So while we were planning, we were talking about writing our vows. My FH suggested we write our own. I was very shocked because he’s not great with words but I thought it was sweet. So we were chatting about vows, looking at examples, watching wedding videos to get some inspiration. His mom was around and started to say really mean things about the vows she was hearing. She went on and on about how those are so fake (the ones in videos) and she believes people shouldn’t promise unrealistic things like promising to not go to bed angry. She was being really catty. My FH told her several times to stop saying rude things, that we appreciated her opinion but weren’t asking it. She went as far as to say what does it matter, most weddings end in divorce. She said all that while I was there and another cousin of his. He and his cousin called her behavior out. I ignored it and felt it wasn’t my place to say anything. After I left, he confronted her and asked why she was saying that. She went off and said it was her house, she can say whatever she wants. Well the conversation between them ended really sour. She’s now unwilling to participate in the ceremony and refuses to give a toast at our wedding. I can tell my fiancé is really hurt..I am wondering if I should talk to her. I’m also hurt by what she said because my own parents are divorced.
I’m really trying to not let this get to me but it is super hurtful. Advice on what to do?