She's flexing her hand, testing the tightness of the wrap (it's pretty good, actually) when he says that. Because... did he really just... Yep, he did.

Her face scrunches up in a what the hell expression of disbelief but she also has a smile creeping into existence. "If I had, I wouldn't tell a complete stranger about it," she informs him with a hint of mischief in her tone.