"I didn't tell anyone!" she blurts out quickly. "I, um, I saw your show before... And I saw Robin on TV once? You did a quadruple flip. And, um, there were supposed to only be a couple people who can do those.

The rest just, um, made sense?" Bruce Wayne is about the right size for Batman, at least in the photos she's taken. Bruce Wayne gets a new ward who's an acrobat, Batman gets a new partner with acrobatic skills. It just matched up.