Sorry it's long in advance...

So a girl at my school we will call her Ana*. She is talking a LOT behind my back to my friends. She also talks about my friends. And she is kind of petite... well anyhoo, she likes to go into random people's conversations and say things like "I know I'm awesome", "Everyone loves me!" Or " I know y'all were talking about me cause I'm so awesome!" And she's said I have the biggest ego ever, and when I do my make up it looks orange, and clearly I don have a big ego, nor does my makeup look orange... She thinks she is perfect, but she's not, because no one is. And I know that... and I just want some advice on what I should do about it. I'm thinking about saying something to her about it because I'm not about the being pushed around and letting myself get bullied or talked about life. And I can't handle it wen others get talked about or bullied, that's just not cool... And thinking your better than everyone else is honestly stupid I mean come on Ana... It's not Ana's place to tell people how their hair, makeup, or clothes need or have to be... Like she's done to me, and my friends. It's not right to think that your perfect, the only people that are perfect is God and Jesus... I've honestly never done anything I Ana to make her talk bad about me. She acts like she's my friend and then says a lot of things about me and I'm getting sick of it... thanks for reading... please tell me what you think I should do about this..