My friend is really annoying. PLEASE HELP.?

I understand how it feels to be clung to. I'm actually going into high school too. You said that she has way more friends than you, but you may be the only REAL friend she has. You also said that you tried to talk to her before about it, but I'm assuming that since you're such a nice person, it wasn't 100% straight forward. When you feel up to talking to her and telling her to back off, you need to be forceful, because obviously the nice route isn't going to work. Try something to the effect of:" Okay listen, I've tried telling you how I feel in the past, but you didn't listen, so now I have to be more forceful." This let's her know that you're being serious. Then you can add " I need my space. I really don't have time to be with you every single day, let alone a whole week(volunteer camp)." This let's her know that she is trying to spend too much time with you. Then add something like:" I feel like I am making sacrifices to make you happy, but in turn I become unhappy, and I have to put on a front like everything is okay when it's not. Like, I don't want to go to that volunteer camp, but I just made it seem like I was happy about it, just so you could be happy." This part will let her know that this kind of friendship isn't working out, and she will have to make changes in order to keep the relationship. Now you can say something like "I honestly care about you, but it's making me depressed when you are constantly talking about how bad you have it. I try to recommend and give ideas but you always push them away, so I don't know what your trying to get out of you complaining to me. If your trying to get me to pity you, it worked at first, but know it's just becoming a nuisance/annoying." At this point she probably will be furious, and if she ever tries to interrupt you while your talking, tell her to stop, because it's your turn to talk, and if she doesn't want to hear you out then it's not worth trying to talk to her. To wrap things up you can tell her "Listen, if this is going to work out, then you've gotta make the changes, because I'm done making the sacrifices, now it's you turn." Now, from what you've described her as, she will probably try to pull the pity card, and say things like "this is just like when my best friend left me, I'm bulimic." blah blah blah. You just have to remember, you're done with the pity, and you need to take a stand. If she won't comply to what you have said, then the friendship is done. If your gonna give her another chance, and she says she's gonna change, then you have to know your taking a risk. If you give her another chance, you HAVE to live up to your word. If she starts going back to her old ways, then the friendship is done. Don't just say your gonna end it, and then not, because she'll start to realize that your not going anywhere and just go back to her old self and take advantage of you. If you get nervous trying to tell her how you feel, just remember, it's your turn now to put your foot down. Remember the stress, and the anger she has caused you, and I bet that will make you gain the courage you need to face her. I hope everything turns out well!!