So my fiance and I have picked our date for December 8, 2012. It wasn't as easy decision as my Maid of Honor is my sister and her birthday is the day before on December 7th. The reason we picked this day was so that we could go on a 2 week honeymoon and still be home by Christmas so we could spend our first Christmas as husband and wife with our families. Now, before we totally decided on this date, I asked her, as my best friend and my sister, if she minded the day. I told her I would move it if it really bothered her. I truly believe she was honest with me when she said she didn't mind and she was very happy for us. My mother on the other hand is not happy....she insists that I am inconsiderate of my sister's feelings and I need to move it back a week. I really don't want to be away over Christmas. I insisted that I did consider her feelings and she was okay with it. It's now the root of every disagreement we are having about flowers, dresses, favors, and colors. I don't know what to do! Any advice?