wedding advice????

Katelyn
So I'm getting married in a little under a month! My oldest sister is supposed to be my MOH. But there's a problem we are having a child free wedding. And as of right now my sister is refusing to come because I won't let her bring her son! I tried to compromise and say she could bring him and leave him in the bridal suite with a sitter. But that doesn't work for her apparently. It's really stressing me out especially so close to the wedding. I just don't know what to do. My mom is now just telling me not to have her come at all since all she's doing is causing problems and could possibly ruin my wedding day. Any advice at all how to handle this?