Down to one maid of honor.

I had two maid of honors because I couldn't pick one, because they both meant so much to me. I had my best friend and my cousin. Well as of last night my cousin dropped out. I'm more upset and hurt by her actions then I am mad. They way she went about it was just messed up. Now, I'm down a maid of honor, a groomsmen, flower girl and ring bearer! Yes, i understand I have a lot of time before my wedding but other things are in play here, So i dont need advice that sounds like "give her time, she will come around, or dont worry about" Anyways, She has became very jealous over the last few month of my lifestyle, do to that i dont have kids and she has three. I have tried very hard to make sure she knew that isn't a deal breaker for me. I love doing things with her and her kids, but lately she just keeps telling me no one wants to hang out with her because she has kids. She is always mad that me and my best friend hang out, went i asks her to do something and she tells me no. She has never really like my best friend, I'm not sure why, but my cousin posted a great big status on Facebook, more or less calling me out on things, So message her to talk about how she was feeling and see if we could work through things. She didn't want that at all. She wanted to fight. Which i told her i wouldn't do. I just want try to fixes things. So i asked her if she still wanted to be in the wedding, because she posted on Facebook that she didn't want to be. She gave me the run around about the question. First, it was yes, then it turn into i dont know because of some dumb reason, then She tells me no and continues to tell me that she feels uncomfortable standing next to my best friend during my wedding thats why she doesn't want to be in my wedding. This upset me very much because a woman that i cant stand do to her actions was in my cousin's wedding and I had to stand next to her during her wedding, so why couldn't you suck it up for me, as i did for you. I just feel like she didn't want to be there for me,and i just dont understand that. I would of respected it more if she would of just been up front with me about everything, and it really sucks that things happened like this. I guess im not really asking for advice, just needed to rant. Yes, im sure there was things I could and would of changed, but maybe its for the best.