You're certainly kind. That was not an association that he could recall anyone having ever made with him, but it was...strange. Oddly pleasant, but never being one to overthink anything, Castiel simply took the statement for what it was. And her affliction could not affect him.
"Agent Natasha Romanoff," he said, pulling out his phone. "She's straight forward. And Rocket is..."
He was actually a raccoon with the ability to speak and anthropomorphic qualities, but Castiel stopped himself. Dean would not have believed him. Neither would Sam, and they'd both known him. Seeing as Cosima did not, he rethought his position carefully. "It may be best if you speak with him yourself. There is also Kate Beckett, whose number I can give you. She's also helpful."
Finding the name Cosima under all of the contacts that had not been there before was not difficult. His ability to forward anything was clumsy, but...Sam had shown him. Finally, the skill had a practical application. At the time, Castiel had seen no such purpose. That left the matter of her illness.
Knowing better than to explain it, he raised a hand, pressed it to her forehead and used his Grace to dissolve the sickness in seconds, correcting the anomaly in her very genetics and eliminating it. "You will feel the pressure relieve itself. And there should be no pain."