IIN for a 13 yr. old girl to not want ANYONE sitting next to her?

Maybe she has been sexually molested and needs MAJOR psychological help..

Maybe the folks that sit next to her smoke; stink, or sneeze into her air with their cold germs, or fart, or pick their nose, or have lice, or suck their teeth, or babble racist dribble, or just display a carnival of offensive behaviors and she doesn't want her space invaded by that when she was "fine" before they came around contaminating her space.... Maybe she doesn't want to make "small talk" with some idiot, or smile to make them happy, or think about the possible "blue waffle" or "special fried rice" that is planted inches away from her body... What? She didn't ask this diseased person to occupy her formerly free space.....

Go away!!! People are disgusting!!!! Arrrrgh!!!!

Could that be it?

She really should get some mental help, though, if she is rejecting her parents or her grand parent's...