Weddingbee boards

Ok here is some background information: My Moh is my longest friend of 20 years. We have been best friends since Kindergarten. When we were 14 her family moved to South Carolina. We made a pact that we would be each others MOH in our weddings. Through the years I have made several trips down there to see her, when her son was born, for her wedding in which I was MOH. She has never been back up here to visit since she left. Ive asked her several times to come up, even if its just for a 4 day weekend, she wont. She got engaged and 5 months later married. I flew out a week before her wedding, missed a weeks worth of work, missed 2 finals for school and put out of pocket nearly $900 for her wedding. Between airfare, meals, my dress, alterations, my shoes, hair, nails, makeup, her gifts (3 of them for all her parties and wedding). She was so rude to me when I was there, I was completely uncomfortable and unwelcomed the entire time. I even had to be DD because she wanted to get smashed and she knew I didnt drink.

Her wedding was November, Ive only talked to her once since then. I called her after the wedding and tried to be nice about the whole situation. I tried to explain to her how I felt and thought she was completely rude when I was there. She never apologized, only had excuses. She called me last month and asked me when the Save the Dates were goign out (we have been engaged for 16 months now and the date has always been the same). I told her the STD went out weeks ago and she claimed she never got it. She is the only one who didnt receive hers, even my bro in Afghan got his. I told her I didnt have anymore and I emailed her all the information. I emailed it. no response.

I have 3 bridesmaids and she is the only one who lives out of state. Whenever I email them about anything, I always include all three. Dresses, shoes, anything, they all get it and respond, except her. I told them to pick black cocktail dresses, in whatever design they like, as long as its appropriate and flattering and comfortable for them. She has never responded. When I bought my wedding dress, I excitedly sent her pics, she never responded. I started to think that her email address must have been changed because literally she didnt respond to a single email. So I sent her a text asking what her email was and if she uses it and she sent the one that I had been emailing and said she checks often.

I dont know what to do. I want to talk to her and tell her how I upset I am at her being absent through the best time of my life but I dont want to come off selfish or bridezilla-like. I love her, she used to be my best friend, but I just dont like the person she has become. She never calls me, never emails me, doesnt respond when I try to reach out to her... Honestly, at this point, I dont even care if she shows up to the wedding.  

Any advice?

I called her after her wedding and she was really rude. I have called one other time and she never answered or called me back. Im not the type of person that will continue to call without a response the first or second time. I think I havent continued to call her because I am still pretty hurt over what happened at her wedding. Am I being childish?