Ghana was "official business", not a vacation. Besides which she pledged she wouldn't take any trips abroad (I'll spot her the two Paris ones, grudingly, because she was representing the city with the next Olympics but I would also contend they count as paid vacations). Admittedly you can't ever predict ahead of time how bad it was going to be. But I think she does admit that she was warned about the Santa Anas but then seems to abstractly counter that she wasn't warned "enough" .....
... and doesn't give the fire chief any grace for any of this. I hope the fire chief sues for retaliatory firing, but I wouldn't have any hope she'd get very far.