At her consent, Castiel moved forward. This time, he had barely to touch her. The instant that he did, any hint of throbbing in Selina's shoulder did not ebb away so much as vanish completely, leaving her limbs and muscles as good and refreshed as the day she was born. This done, his attention was already elsewhere. He circled distractedly around her, seeing or hearing something that wasn't apparently there.
"I will come for you tonight." With these final words, their business was concluded and he departed as abruptly as he had arrived. Well, he certainly could have been more considerate and offered to do something about Joan, but a Martian could easily have bested him when it came to personal relationships.