I guess I should've said this earlier but full disclosure I do know her from college (I have been watching the show since before though), I have spent a lot of time around her, and don't really want to say more than that. We were never friends or close in anyway so I'd have no issue agreeing and saying "yeah she gets like that."
That being said, from all the time I was around her she was nothing but positive, kind, and thoughtful... even in situations where being "snarky" or "rude" would be totally understood and warranted. I've never heard anyone say she's behaved disrespectfully or anything less than pleasant, until reading this forum.
Like I said, we were around each other a lot and if I had any inkling from that experience she would act in that way I wouldn't say anything. From my experience and others with her, that seems way too out of character to be the whole story. Even if one of my best friends gets called out for acting like that I'm not one to vehemently defend them if I suspect it could be true.