[Heh. It's sort of funny that she's telling him this. Would she say the same things if she really knew the things he's done back home in the wake of Tadashi's death? But even Tadashi doesn't know all of the details of what happened back there so all he can do is huff a little under his breath in response to Rapunzel's words.]

Which is exactly the reason I don't tell Tadashi everything. And I wouldn't call this torturing myself anyway. [Regardless, he's curious what she means.] And what stupid mistakes have you made that could even count as stupid mistake? That's pretty hard to imagine.