Falling out with Mom

My mother and I always had a strained relationship. She is more outspoken and doesn’t think of the consequences of her words. She told me to book a room block and then supported her side of the family to book the same hotel outside of the room block to save (literally) a few dollars even though it would mean me and my fiancé potentially paying hundreds-thousands for the unbooked rooms. So we cancelled the block.


Our relationship has been rocky and it came to a tipping point when she told strangers to ask for me and I would “take care of them” at my hospitality job on an extremely busy day. I told her it wasn’t right and then she threatened to screen shot my texts to tell family and friends how “nice” I was. I’m at the point I feel our relationship can’t be salvaged. Our wedding is a few months away and I don’t know if it would be better to ask her not to come or to just deal with her and the toxic behavior.
A lot of family from her side is attending so her absence wouldn’t go unnoticed but each time I give her another chance, she ends up hurting me more. Please share any advice you can. I’m grieving the loss of the relationship while trying to navigate what I should do for the wedding in this scenario