Mr Trick
Scooby
I did think they were justified. I always thought that Jenny was a little hypocritical with her treatment with Giles. Only weeks before she had made him feel awful for putting her in danger and she had been withholding information which was equally as dangerous.
I take your point, but I do think that's a different case. Besides I don't think she was actually angry with Giles as such just that she was in such a state as a result of what happened than she needed some space. Also, I remember her being quicker to forgive than Giles and Buffy were.