So my fiance has a sister that is 19 almost 20, and a little sister who is 9. His mother was upset because I don't want to have any jr. bridesmaids, but there is no changing that so she has gotten over it. Now since me and my fiance were talking to our coordinator (who happens to be in his family) we were telling her about who was in our wedding party. His mother got really upset because we said his 19 year old sister isn't going to be in the wedding. She said it's not right, it's "proper etiquette", and there shouldn't even be another option... blah blah blah. My fiance told her that we both picked who we wanted on our sides and I picked the people who are closest to me, and me and his sister have probably only held 5 maybe 6 conversations over the 4 and a half years me and him have been together. So obviously I don't feel close to her. So his sister decides that she wants to bring this up at his 9 year old sisters birthday party and his grandmother starts yelling at me and my fiance about how wrong it is... He told her that she couldn't be a bridesmaid but she could do something else. She said no, I stopped being a hostess a long time ago so I'm not doing that. Who the heck told her that she could pick what she wants to be in *our* wedding!!! I'm not sure how I'm supposed to deal with this. Now when I'm around his sister she won't even say hi to me. And his mother is not acting the same either. I don't want to put her in my wedding party but I don't know what to do!