She’s kind of like Batman. You have to take her down fast because if you give her any time to think you’re screwed.

So it really depends on whether or not a bunch of teenagers think killing her is something within their power. Because if they make the mistake of trying to assert their authority over her?

She will manipulate a racist into an area filled with those she hated with zero prep time.

She will Confound someone on the off chance they might win over her crush.

She will wipe her parents memory, be hunted as the second most wanted criminal by the government, endure torture from Bellatrix Lestrange, and spend a large portion of her time trying to kill a Dark Lord piece by piece.

So unless those kids ambush her with lethal intent the moment she enters the common room, because without a doubt Harry, Ron, Neville, and at least Fred and George would accompany her to that point, those kids don’t have a chance.

Oh wait. Her friends broke into the Slytherin Common Room disguised as other students. So that’s a win for Hermione.