Castiel sighed, understanding the human phrase 'bone tired'.
"You," he emphasized that slightly. "You find an identity of your own. Not what Azazel told you to do, and nothing that involves Sam. Do something for yourself for a change and be something beyond just a follower."
He'd once told her to have something in her life that wasn't Sam. He'd thought that maybe he could have been it, but it seemed that no, he hadn't been enough and as a result she'd lost everything. He wondered now if finally she'd find something else to live by.