He holds onto her gently while she sits, not about to risk her falling so soon after the incident. The rest, of course, makes him laugh.

"You're in recovery and you want to make me a sandwich?" he confirms, taking his hand off her to gesture towards the kitchen around them. "Well go on then, you know where to find everything."

Frank is well aware he shouldn't encourage her shenanigans, but sometimes when it comes to Clara he can't help but poke the bear. Sometimes it's entirely too tempting to see how far she'll go, if only because most of the time it seems like she doesn't have a limit at all.