The fact she's handcuffed immediately makes Eiffel look uncomfortable - not for the reasons she thinks, though. He's just vaguely distressed about seeing her all tied up.

"Uh- yeah, sure." He bends down to put the coffee on the floor, trying not to get closer to the cell - and then sits down with it, and uses his sneakered foot to very carefully eke Shaw's coffee closer to the cell, within her reach. Admittedly he's more focused on making sure the coffee doesn't fall over than he is worrying about whether or not Shaw can grab his foot, but the coffee's more important.