i know i have No Reason to Be Upset, but i am

I had a best friend let's call her Jane and she was supposed to be in my wedding. Last Christmas, she dropped out because she said she couldn't handle the stress of being in two weddings. She was supposed to be my maid of honor and another girl's maid of honor 1 week later. After she dropped out, I found out she was badmouthing my husband and I to our friends and family. So we stopped being friends. I recently found out the other girl who was supposed to get married didn't. I also last night saw a photo of Jane wearing the dress I picked out for my bridesmaids to a Christmas party with her boyfriend. This has me kind of upset and hurt. Jane and I had been best friends for like 10+ years. I considered her my sister. I even picked her to be maid of honor over my actual sister. I think the fact that she was wearing the dress is what has me the most upset. She dropped out within weeks of purchasing the dress so I thought she would have returned it. It just is upsetting to me to see her wearing a dress I picked out for my wedding because I had a very difficult time with her not being in my wedding. I had always pictured us getting ready ready together and her standing by my side. Although I was the one that choose to end our friendship because of the things she had been saying, but it still wasn't an easy decision. I guess seeing her in the dress is bringing back the pain of losing someone I considered a sister. I know she has every right to wear the dress because she bought it, but it still hurts knowing that she kept a dress that was intended for my wedding and she wasn't even in or at my wedding. She is the one that really convinced me to pick this dress for my girls to wear so part of me is wondering if she never actually intended on being in my wedding and that she just really liked the dress because at that point she had already been badmouthing my husband and I to people. I just needed to vent.