How did they figure out it was her account, anyway?
Anyway, kind of a huge difference between insulting adults and insulting the students left in your care each day, why are they even comparing the two? One's kind of a lot worse than the other.
Regardless, it seems pretty common sense not to insult your students like that. Yes, they're childish insults, but that's still inappropriate for a teacher.
Who's your favorite character from "Bend It Like Beckham"? And you can't say Beckham.