Should I just let it go?

My aunt absolutely hates me. She tells everyone how she doesn’t like me and hates my personality. My mom says it’s because I’m a bit of a slob now but she’s always hated me. I’ve planned a family birthday party for my birthday that’s in January. I told my mom that I don’t want to invite my aunt because she hates me and treats me like trash. My mom decided that either my aunt is going or she’s calling everyone and telling them the dinner is off. My mom is in charge of my family so she can do that. I’ve decided just to cancel it because I don’t want to be treated like I mean nothing on the day that’s supposed to be mine. She makes it well known that she hates me. I just don’t want to be miserable on my birthday. My mom thinks I’m being ridiculous and should just get over it. Should I get over it and invite her or not?