Women aren’t often allowed to be unlikable—and that’s especially true for fictional women. Most readers get that “sympathetic” or “interesting” isn’t the same as “nice”: look at all the asshole geniuses and Byronic heroes lauded in fiction and adored by fans. But the common denominator among these assholes about whom so much ink is spilt, and to whom so much screentime is devoted, is that they’re invariably male.
Female characters have a low threshold for unlikability, as well. Often it simply means that they have goals and motivations that have little to do with the wellbeing of other people. Women who aren’t nurturing and self-sacrificing? How dare they! Do they even know how to woman?