A good friend of mine is borrowing the dress I wore to my wedding. A year ago, when I agreed to lend it to her, I did so partly because she told me it would be so special because of our friendship, and she was happy to be wearing a dress that has personal significance. Today, just two weeks before her wedding, (which I am showing up for a week early to help her organize and get ready for), she emailed me and asked if I would not say anything about the dress being mine because she told her family she had bought it. I wasn't even planning on saying anything in the first place, but why would she want to spin this lie, and then ask me to go along with it? Am I out of line for being miffed about this?