This hadn't occurred to Kevin's barely conscious mind. His subconscious had assumed that he was the only one who was cold, or perhaps that it was every man (and woman) for themselves when it came to warmth. But as he woke up a bit more, he nodded - and then realized nodding was an ineffective movement for communication when he was ensconced in blankets, his head beneath the covers.
"Okay," he said, but wasn't sure exactly how he should shift to let her in. "If you can figure out how. I'm not sure I even know how to get out of here."