Sorry this is going to be long, but I really want advice.
So my future mother in law is a complete control freak and she believes she is never wrong. We are currently in a big argument over the guest list. I have always been respectful and nice no matter how wrong she is on a subject. Well now she wants me and my FH to have a huge wedding (about 300) with that being mostly her friends and coworkers. Her reasoning for this is that she is paying for the food (which I am very grateful for!), but there are other costs involved with more people that are being reflected on me and my mom such as decorations, cake, invitations, etc. My mom and I were hoping for about 150 at the wedding, and my FH wanted about 200. I thought we had all agreed on the middle ground of 200.... but the MIL keeps making the list longer and longer of people my FH and I don't even know. I finally stood up to her saying that we wanted to watch the costs and that we wanted a small personal wedding. She completly ignored me and said the costs aren't an issue because she is paying for the food.
Am I being selfish for wanting the people at my wedding to be either close to me or my FH? Should I try to stand up to her again? She thinks I do not know anything because I am just too young. My MIL is the most well off ($$$) of all the parties paying for the wedding, but she doesn't seem to understand that. My mom is completly siding with me on the issue, but I just wonder if I am just being a bridezilla. Thanks ladies.