You can't blame yourself for that, Hiro. [She pulls back, watching him carefully.] But... if it's bothering you that much, make sure you talk to him when he comes back, okay?

[For now, she's going to bank on Tadashi being revived, though she does look sheepish at Hiro's observation.]

Um... it came up when we talked about your world. You didn't mention it, so I figured you didn't want to talk about it.