Dp and I have recently got engaged (been together nearly 2 years, lived together a year) and are planning a big party in a few weeks. Since i've known dp, his mother has been a nightmare, she refuses to acknowledge me when i speak to her, doesn't allow me into her house, tells dp to leave me and puts me down to him, threatens to cut him off from his family for being with me, threw him out of her house when she heard he'd proposed among alot of other things.
She thinks he can do better than someone with 2 children (she hated his last girlfriend as she was to fat) I would love to be able to relax and enjoy our party without being glared at and having dp miserable and don't want her to be invited (she would probably just tear the invite up but on the off chance...) I know its difficult for dp, even tho she treats him appallingly he loves her although he acknowledges she would ruin the night. When he proposed (on stage in front of 100 people lol) the first thing alot of people said was 'what will your mum say' and I want our party to be about us and people being happy for us, not about her and her tantrums for once. Also, our children will be there and I don't want her causing a scene in front of them. So aibu and if not how do i handle this.