Meroon is both not picky and also accustomed to a world where the cursed land yielded only meager, tasteless foods. Basically everything on the tables before her is a delicacy in her eyes.

"How are you at slight of hand? They have more food than they'll possibly eat..."

And it's being offered freely, so it's not really stealing, is it? She's probably not morally in the wrong for liberating some of this food from those nobles.