Sounds like y'all rushed into it honestly. Now she's realizing It's not what she wants and wants to end it.

You can't think about what she's going go do. Let's be honest, she WILL be with someone else, and so will you. At this point to you really want to be with someone so shallow, so inconsiderate to your feelings? I mean if she really cared, she wouldn't be going off to party next weekend. She sounds incredibly immature.

I'd end it and move on. Being alone is perfectly fine. Enjoy it. I'd stay away from dating for awhile. Focus on making yourself tue best you can be.