Clarisse is right about the food, and once she realizes what's going on she shoots Clarisse a grateful sort of look like oh hey, you noticed.

"There isn't some sort of like... Ancient Greek magic to see whose kid you are, huh."

Ellie chews the inside of her cheek. She can't help it, she's curious.

"What if a kid gets claimed by the wrong god? Or more than one?"

It seems like a long shot, but maybe it happened. Who knows?