What is up with her??

Could be that she's jealous

It could possibly be because she made a friend who's influenced her to do something like this, someone who doesn't like you? Girls are tough (I'm a girl myself) but the best way is to talk to her about it, alone. If she refuses to talk to you, then you can keep trying if she's important to you, but I wouldn't recommend it. Also, talk about how you feel hurt by her actions. I hope this helps...any questions? message me.

I agree she could be jealous, or someone has influenced her to say this to make her look 'cool' or 'funny'!. Some people love getting attention and saying things that make themselves look better. You need to let her know that she upset you and that it wasn't a nice thing to do. No one deserves to be made to feel like they are smaller or lesser than everyone else. Make sure you do it one on one though so its not like your doing the same thing that she did in front of a group.

did u have a bf she had a crush on?? I am having a feeling that it has something to do with a guy...

I would confront her about it privately. If you can't find a way to get alone with her then send her a message telling her that her behavior is completely immature and seriously hurtful and if that she has something against you she should speak to you privately about it instead of acting out this way. And tell her if she does it again, you will report her (if it happens on school grounds). Be assertive and confident about it. You don't deserve that crap. And she needs to know that she can't treat people like that no matter what she's feeling.

She is definitely mad or upset about something and she could just be taking it out on you. Please go one-on-one with her and ask her "What's wrong? I need to know why you're being mean to me. I thought that you were my friend." She needs to be confronted and you need to tell her how you feel and not just take it. If she doesn't respond positively or apologize...I'm sorry it's time to look for a new friend who will give you the same respect in return.