Best Friends Forever... Or Not?

Okay, so, when I was in sixth grade, I became friends with a girl named Elizabeth. We've been friends ever since. Until recently, that is.

I'm not sure why, but she hasn't talked to me for the past few weeks, and it's really upsetting me. She won't say what I did or why she's mad, she's just totally blowing me off. I hate it. I've got half a mind to just totally confront her, but I won't do that. If she's just going to totally blow two years of friendship off over whatever she's mad about, she's really not even worth it, in my mind.

But our friend Tegan is caught in the middle, and I really hate for her to be stuck between us like this. We're both her friends. I really don't wanna fight with her, but Elizabeth is freaking drama queen and has to make a huge deal out of every little thing. It's annoying, really.

So, what do I do?