And it didn't occur to anyone that after comments along the lines of...

'I don't care for Islam'
'Islam is outdated'
'Islam is hateful'
'Islam's prophet is a paedophile'
'Islam kills people'

... that she might be a little angry?

She wasn't the one who started getting narky with you all. In her first posts she tried to answer the questions put to her, questions mostly phrased in a deliberately awkward manner. Give her a break, for pity's sake.

And if you are so concerned with her being thirteen, perhaps you should all take a long, hard look at yourselves, as adults, at being so hateful towards the religion that is important to a young girl.