Ok, I need advice. My fiance's sister and mom think that his sister should be in my wedding party. I have already decided on 5 girls (close friends and my sister) to be bridesmaids. I am not close to his sister as we don't ever hang out. I find it extremely awkward for her to expect to be in my wedding party as I would never expect to be in hers when she gets married. She got mad a few years ago when she wasn't in my fiance's brother's wife's wedding party.
I don't feel like I have to put her in my wedding party because I already have close friends and my sister but I don't want to cause tension either. Is there another way to have her included? We're most likely going to have a short ceremony so weren't planning on readings or anything but I want her to feel as though she has some part to play. Any feedback or suggestions would be much appreciated!