Maid of Honor decided to not come to my wedding at all, and I'm heartbroken

My maid of honor is my best friend of 5 years. She moved to the other side of the country last fall as her husband is going to law school. My understanding is that she has been having a hard time finding a job out there, and she finally got one this last week. I was excited for her. But with that came the news that now she would be "unable" to attend the wedding, but she would "make it up to me" by giving me a nice gift. She says she's under a probation at her new job (which starts 3 weeks before the wedding). I just wonder if she even brought up the wedding to them at all. I don't think she even tried to get the time off because she was afraid they wouldn't hire her.


She tried back in November to back out of the wedding because of a misconception on what her role as maid of honor was (she thought she had to pay for a bunch of stuff, which she couldnt afford), but I told her I only wanted the honor of her presence at my wedding and if she needed it, i would be more than happy to cover the airfare and the cost of her dress, and that the only thing I expected from the role of maid of honor was for her to be standing up there with me. Then she changed her mind and said she could still be maid of honor.
All this back and forth is making me question if she was really as close a friend as I thought. I think of her like a sister. I would NEVER have even considered missing her wedding. I was her bridesmaid and took out time and money to make sure I was there for her on her special day. But here she is again, trying to get out of it. I feel like she doesnt even want to come. She seems more upset that she cant come because she knows it's upsetting me than because she actually cares about being there. It feels like the end of a friendship which breaks my heart, but I can't get over the fact that if the roles were reverse I would never even think about doing this to her.
I have 3 friends and my only family is my dad. I was only going to have 3 bridesmaids (her, another close girl friend who was wrving as co-maid of honor with her, and my fiances sister). I only have one other friend, and he's a guy but he may be the only other person I would even think about to have up there with me. She has a huge family with lots of connections (she had 7 bridesmaids) so maybe she doesn't understand why it's such a big deal that she's not coming.
Trying to figure out if this friendship is worth saving or not.