He frowns, the normal ease he feels after smoking slowly dissipating. Castiel can note the differences as easily as he'd once been able to as an angel; perhaps not to a great extent, but he recognizes sleeplessness, fear. She's afraid of something, and walking around Zelien when it's like this isn't at all safe or comforting. He leans back and gestures to the empty spot beside him.

"You can sit with me." A pause, and he doesn't look away from her. "What happened?"