<human>: Basically my asshole classmate has a serious ego. She talks down to people constantly. I overheard her talking to a student sarcastically about a group paper they were working on. One student caught a mistake in the essay, and instead of just changing it, this asshole interrupts the student who wrote it who is working on something else, gets everyone's attention, and then says, loudly, something along the lines of: 

"Do you see how in MY sentence, the verb and the subject agree and it says 'We attempted.' Yeah, you see that snowflake? Now look at your sentence. Do you seriously not see a problem now?" 

The kid knows how to make a sentence, he just made a fucking typo. It wasn't going to be a big deal, and there was no reason to explicitly embarrass him in front of our professor, TA, and our classmates. I regret not telling her to back the fuck down. Should I next time? Or should I tell her privately that she is way too aggressive and sarcastic (which she will probably roll her eyes at, anyway).

This person considers me a friend because we share a suite but we don't hang out (and I think she's an asshole) so I don't really consider her to be one.

Condense the text into a few key points
<bot>: Do I need to take my asshole 'friend' aside and tell her to be a better fucking person, or can I just tell her to back off the next time she acts out?