Except that an "asshole" is decidedly female. And apologizes for out concern-trolling you.

I used the right word for her attitude. There are probably 10 usages of "bitch" and some are gendered and legitimately offense, while others are not. (I've called men "bitch" before.) This use of the word "bitch" means "mean-tempered person with unearned wealth or social standing". It's not gendered. You could use it on an ill-tempered male trustafarian and it would work.

It might simply be what part of the country I grew up in (southern CA), but I never "bitch" used in that way about men. It had an entirely different meaning, similar to serf or 'gofer' -- whereas when people used it about a woman, it basically meant the same as "asshole".

I hardly believe I've typed these words out. Blech. In any case, I think that for a large part of your audience, and perhaps US society in general, "bitch" definitely has a gendered connotation -- even if you did not intend one.