"I had tea with Buddha before, and drank a cup of Mead with Odin. But that didn't take place here. And it seemed so long ago."

Castiel watches her take the cup of milk, and then dump it. For him the gesture matters most even if people don't eat or like it. And he didn't see the plant enjoy a healthy drink of strawberry flavored milk.

"Mmm. I would consider myself a higher power of sorts, but I'm no god. Though I would think they would have some knowledge of multiple universes." Castiel puts his hand to his chin and he tugs at it. "Or they're completely oblivious and they would be amazed, confused, or they're one of the bad ones who would try to rule it."