I have a bridesmaid who has been my best friend for my entire life, but she is being very difficult about my wedding. At first she seemed thrilled, but now she seems to want to take over. She refuses to even consider wearing the dress I picked out, even though my other 6 bridesmaids love it (I have all different sized bridesmaids and it's so flattering on all of them). She also insists on "approving" all of my decisions. I don't know what to do about this situation, she's the type of person who will be deeply offended if I tell her to butt out, but at the same time, I don't need the added stress. What should I do?