AITA for over reacting when I was told that I wasn’t allowed to come to a family dinner?

Anonymous
Ok so before anyone says that I am hear me out! My mom told the whole family that we’re going out to dinner tonight at red lobster which I was excited about but after telling everyone that we’re going out to eat she proceeds to tell me that I wasn’t allowed to come and I don't know why she said I wasn’t allowed to come but she later on decided to call my brothers girlfriend and invited her and her parents to the dinner while I’m at home alone! She then tells me that we have food at home and that I can make food for myself which is so unfair because everyone else gets a yummy dinner including people who aren’t part of the family! So I decided to yell at her telling her that it’s unfair that she would invite people who aren’t even part of the family but no invite me! So AITA cuz I don’t think I am!
Updates
1 y
ALSO JUST TO BE CLEAR IT WAS A FAMILY DINNER LAST TIME I CHECKED MY BROTHERS girlfriend AND HER PARENTS ARE NOT FAMILY
AITA for over reacting when I was told that I wasn’t allowed to come to a family dinner?
1 Opinion