My Friend Changed. Would She Come Back?

[Marina]

Is there a way to get her back? Or do I have to just sit here and wait?...

My friend, N, has changed so much since we hit highschool. Were almost done with our freshman year. We've been best friends since 3rd grade.
It's been such a long time since she started to change so I can't really remember how she used to be...
But what I remember is that she used to get many A's on her report cards and she was very supporting, nice, and funny.

But now, she's being a total b!tch now. She uses me like an Answer Key to her math HW everyday. I stopped though.

I don't like her friends, honestly..
Her friends also uses me. They make me go trash their lunches and then left. That's pretty much the only time when N's friends would say a word to me. They don't talk to me. I talk to them, but they ignore me. I recently started sitting with a different group of friends, the one where I am more comfortable with.

I cried one day. N's friends keeps calling my friend names. She's trying so hard to fit in and I felt so sorry for her and bursted in tears at home when it wasn't even me that was bullied.

The one thing that pisses me off so bad is how she is bragging wayyyy too much. She is going to a Worlds Dance Comptetition this week and she's been spreading it around the school since a month ago.

I follow her on twitter and today, she tweeted "If u dont no dat im goin to WORLDS, then i dont think we would be frands". - or something Very similar.

I am shy, quiet, and pretty much the opposite of N. She's in the popular group of girls, but I'm just average. Whenever I'm not with N, she would think I would be alone or by my self with nobody to talk to. She even said that directly at my face a few days ago.

I have been avoiding her because it hurts but I don't want to lose her completely. I love all my friends like a family and I want N to be like how she used to be. We will still be going to the same highschool for 3 more years.