She's a woman, and they think she is nasty. What does that have to do with her being a woman? Plenty of anti-Trump people have called him a nasty, horrible man. That doesn't make it a sexist statement, as much as the Clinton campaign and supporters have tried to make it so. (And I say this as someone who voted for Clinton.)
Are we pretending trump didn't insult every opponent in his campaign regardless of gender, or are we pretending it's worse because Hillary is a woman? I'm never sure what to pretend politically.
That's one she managed to spin positively.