Do you think I should end this friendship?

Maybe she just likes a little attention sometimes. I wouldn't really stop being her friend though. Trust me, I have friends like that as well. It gets so annoying when a friend of mine acts like a spoiled brat who throws a fit when she doesn't get her way. Instead of not being her friend, still be her friend but maybe don't spend so much time with her? If she annoys you, don't be close friends with her but still be there for her whenever you can. Hope this helps. :)