I've never understood the American dislike for the word Woman. When I refer to my female undergraduates as women, I am told I make them uncomfortable (my take is, you women better get used to being women!) - it seems as if a "woman" is BY DEFINITION sexual, as if I called them Walking Vulvas or something. I don't get it. I also object to insults that aren't on point - that is, if a woman is being a jerk, calling her a bitch just means she's being a jerk AND a woman, and the fact that she's a woman is irrelevant, to me. I would use Bitch for specifically FEMALE jerk-ness. So in this context (Ditch Her), it is a propos and the mot juste. And some things in English, too...