It's hard to deal with things you can't change

I am sad. A person I considered a good friend has pushed me out of her life.
There were certain issues we had that she wanted to talk about, but I didn't think it was such a good idea. I tried to make it clear that I wasn't opposed to having talks at all, just not a talk where we point out each other's flaws, make each other feel bad, and then get in a huge argument.
I was trying to save the friendship.
She isn't good with criticism. I've tried before. She doesn't respond well to it. And I didn't want to hurt her.
It almost seems as though she had decided awhile ago to be done with it. All of a sudden she thinks that just because I am not willing to "fight" (which is essentially what it would come down to) or talk, that means I don't want to work on the friendship. You cannot convince her otherwise. She just won't believe it.
It's really hard to talk to someone when they don't believe what you have to say. If you tell her she's being unreasonable, she gives you 5 reasons why she isn't.
I didn't want our friendship to end and even went so far as to tell her I was willing to have the talk with her (even though I knew she wouldn't like it) because that's what she wanted to do. I was trying to make a truce. I was trying to compromise for her.
She told me that I'm just flip flopping and she can't trust what I say. Now I am a flip flopper because I was trying to give her what she wanted?
I give up. No matter what, I'm going to end up the bad guy. She obviously doesn't want me in her life. She kicked me out of her wedding and now I can't even be friends with her fiance. That makes me sad.
Well, I'm sorry. I wish things could be different. I guess there's nothing I can do now.
I wish you well...