He laughs a little, "Do you know how to live without worrying?" He teases lightly. That really was kind of a problem of hers. The real her, anyway. He's pretty sure Caitlin has literally worried herself sick on more than one occasion.

"Um...well--" He bites his lip. They'd just gotten off the rocky teeter-totter, there, but... he can't very well let a mirror know he's working on things to screw around with their side of things, can he? Maybe she won't notice the shuffling of the papers as he pulls out something more innocent. A diagram of the sonar gun he was building Maya. "I'm almost done with this one," He pushes the paper over to her. "I told Maya awhile ago, I'd make her a gun." She might notice something awfully Rathaway about the design. He may or may not have sort of based some things off of Hartley's tech.