It wasn't hard to tell that something wasn't quite right with him either. Maybe he could use a distraction as well. "I told you, I like the element of surprise." she said, in the exact same tone she had last time. "I need you to come with me." she regarded him with a steady gaze, face completely serious. "Whatever is affecting the people here, seems to be affecting Angels as well. Castiel believes he has fallen, and heaven is after him. We think someone else he trusts might help to steady him."
And Castiel did trust Dean in a sense. She knew he had chosen, and he had chosen because of Dean. So he was putting his Faith in Dean. That, coming from someone like Castiel, was no small thing. Staying where she was, Anna held out her hand to him. "Please."