AC beat me to it. Like it or not this is a gender issue, it's a reflection of the toxic effects of SJWism on women in real world practice. Sarah is perfectly willing to be mocking, abusive, and disrespectful to anyone she disagrees with when she's in a position of power and nobody can fire back, but put her somewhere she can't silence disagreement or worse still somewhere she'll get just as good as she gives and this is the result.
She wants to be able to mock and deride anyone and everyone she disagrees with, but not have the same done in return to her or even have people disagree with her in a way she finds unpleasant. She's acting like offended royalty, bristling at the commoners that dare presume themselves her equals and speak to her in a manner not befitting her self-given stature.
This is what happens when you raise people on a combination of put-downs and disempowerment mixed with unconditional affirmation and shallow gender jingoism. You get a bully with big ego and a glass jaw, someone who thinks they're better than everyone else because they think they've had such a horrible uphill battle their whole lives but in reality can't actually handle actual adversity or even mere unpleasantness when they finally encounter it. And of course since nothing is ever their fault, nor is anything ever under their control, they externalize all their difficulties and negative feelings onto an outside source.