Throughout Rose's shift, and even for several moments afterward, Carlisle keeps his eyes lodged on the floor, as though the hole he's digging there with his gaze would protect him from his own trepidation. When it doesn't work, he goes for words instead, his usual distraction.

"It's not you," he utters as a reassurance to them both. "I know it isn't, but- but I had someone killed by one of them, and—"

And he hasn't really gotten over it.