[truthfully, she isn't apologizing, per se. and she won't say the words "I'm sorry." but Adora did ask her to get along with her dorm mates, so. . .]

[she huffs, slightly exasperated, and replies--]

Because we're on the same side, idiot.

[-- WAIT]

Uh. I mean-- you're not an idiot. We're on the same side, and it'd just be more trouble for our team if we didn't work together.