[It's not that she's truly upset, just concerned. Ochako's still not really ready to tell people how close she's gotten to Shigaraki, and all the judgment she expects to be handed for it - especially from bakugou. He'd be justified, of course, but--]

...I believe you. [She doesn't need to confirm, and merely gazes at his hands quietly.] I don't really like it, but I'll accept it because it's you.

And tell me when you're coming to pick me up! Before you do it!! [She elbows him in the side.] I had to make up who you were to the receptionist!! It was embarrassing...