No, it was worse than just confusion. The more Sam looked at him, the more she was getting the impression that there was something wrong. His face was still hard for her to read, although it struck her that maybe it was more expressive than usual. But that made no sense at all, so she ignored it for the moment.
"Cas," she said, and this time she took a step forward, reaching out to put a hand on his shoulder. All the differences between their worlds aside, he was still the angel that had helped her, fought with her, even clumsily attempted to comfort her. And she remembered, suddenly, that he had told her that he was healing from an unexplained injury. Maybe that explained the unease, or discomfort, that she was seeing. She was having trouble identifying exactly what the problem was, but it was worrying. "Seriously. Talk to me. Are you okay?"