If Tony sees or notices her confusion over his hand, he doesn't show it. He just smiles, and reaches over to shake her hand in greeting. The soft whirring of the mechanism that makes his arm work could be felt through it, but if she reacts to it, Tony won't take offense to it. He's used to throwing people off with the prosthetic, really, especially lately since apparently he's the only Tony Stark that is missing an arm.

He doesn't mind it, though. His stance remains cool and relaxed, and he grins as he politely shakes his head. "I appreciate the offer, but that's perfectly okay. It's a pleasure to meet you, Karen. Let me just ask for a cup of coffee, yeah? Excuse me for one sec."

This is probably his fourth cup of the day, but hey, who's counting. Tony loves caffeine and, after he places his order (black coffee, no fixings), he goes back to sit at Karen's table. "So, how are you finding everything? Still weirded out by this whole thing?"