"Of course you do. We all live in the same building. Idiot." That much seems obviously to her, and she doesn't have the presence of mind not to taunt the boy she's about to kill. He'll come back, but that only means that she can't let her guard down around him. That's all.

"If you're done saying anything important, then I think it'd time for you to go." Grabbing a hold of a different support rope nearby, Terezi kicks out at the boy's fingers, aiming to damage those and release his grip. If his grip doesn't weaken after the first few blows, she'll aim for his head instead.