[ Castiel lifts his eyes toward the ceiling, irritation plain on his face despite having a limited range of expressions to begin with. The bottle clatters to some dark corner of the room and he makes no effort to retrieve it.

It's not that he doesn't care. One doesn't tuck someone into bed and bring them cold breakfast because they are indifferent about someone's well-being. Castiel is just not well equipped to handle what appears to him to be a worst case scenario -- a human him and a broken version at that. ]

You need help. And I -- I don't know how to give it to you. [ Castiel announces, his tone hardened with frustration but he at least levels his gaze down on him. ] I wouldn't even know where to begin this... this experiment of yours.