I never got along with teenage girls when i was one, so from my own experiences I am willing to guess; they feel at home with treacherous, overly made up, bloodsucking parasitic clotheshorses who hiss at each other and can't stand up to scrutiny in broad day light? Sorry to the tons of teenage girls who don't fit that bill, I KNOW you are out there!
I just get a little catty sometimes. Huggs all!