Barely audible, but just enough. The world fills with light so bright that Ben has to shield his eyes, but Jesse doesn't look away, he doesn't have to. He watches grace and glory enter Claire, her heaven-infused girl body now, watches the skin knit together and the bones set, the blood burn away. And when she opens her eyes, when Ben opens his eyes, it is not their Claire anymore.

Hmm. Is there any reason Castiel would want to hang out in Claire for a while, so Jesse can get angry at him some more or something? Maybe it's the first time Cas has been on earth for a while because he hasn't had a vessel. And now he has some unfinished business, as such.