i feel terrible

I feel terrible because my mom really wanted to buy my wedding dress and she ended up buying me three different dresses. Prior to going shopping, my mom wanted me to go to a store back in my hometown which is three hours from where I live, but I didn't want to because I was worried about alternations. My mom and grandmother came to where I live and we went shopping. I really loved this one dress, but it was extremely sparkling and I thought people would judge my dress choice so I didn't get that dress. Instead I got a different dress and within hours, I was crying and so upset because it wasn't the right dress. My mom and grandmother came back down the following week and we went shopping for a different dress. I told my mom she didn't need to buy me a new dress and I would wear the dress she had already purchased, but she insisted on getting a different dress that I loved. We went shopping and I found a dress I really liked, but didn't love. She bought that dress for me. She also paid for about $1,000.00 in alternations even though I told her I would, but she insisted. I had also lost my job so she knew we were struggling for money until I got a new job. My poor mom spent about $5,000 on the two dresses, but she said it was fine because she wants me to be happy and love my dress. Yesterday, we took the first dress to the shop my mom wanted me to go to in my hometown to see if they could make the dress short instead of long. They could do it, but the appliques on the dress would be cut in half and it wouldn't look right. My mom asked if they could show us some sample dresses that we could buy and have cut short. I tried on several of the sample dresses and fell in love with a beautiful ballgown that was only $250. My mom could tell I love that dress more than either of the two other dresses and even though she had already spent a lot of money she purchased this dress for me. We are going to try to sell the first dress and make a short dress out of the second dress. I am paying to have the second dress altered to be short. I really didn't want my mom to purchase another dress, but she told me that she was buying me a dress I loved even if that meant she had to spend more money. She said that the money didn't matter to her and that my happiness was all that matter. I still can't help, but feel bad for making her spend more money. She isn't upset at all because she knows I love this dress and that's all that matters to me. Has anyone else ever experienced dress regret or guilt because someone else spent a bunch of money on them?