After seeing that Sam was alive and returned to them, Castiel had gone back to slinking around quietly. After Loki had attacked him, he'd been startled by what he'd remembered. Dean didn't know. Sam certainly didn't know. He was alone with his realization and so he kept to himself, mainly perching in his gazebo and watched the handful of wolves cross back and forth ignoring him.

A few times, he's started to wander trying to see if there is any pattern to the animals, but largely he's avoided people, especially his own.

He saw Mina walking towards the clinic she'd helped set up and after a moment of hesitation followed her inside a few minutes later.

"Mina?"