If she is as young as she says she is, and is a 'real' schoolgirl - as many suspect she may not be, then yes, she has come in for an extraordinarily amount of stick.
I have teased her over the months about her just-get-in-there threads, but I would not condone outright bullying or insults, that's just not acceptable for anyone, never mind a young girl who does try and contribute, however she chooses to do it.
I wouldn't actually say she is being bullied as such, but she does get a lot of uncalled for 'insults' I must admit.