She was worried about what could be the reason he was laughing at her, did she make a mistake.
Maybe he is only doing that to get under her skin and make her slip up and do a mistake.
Soon after noticing her pot of vegetables it became clear to her that he wasn't laughing at her for no good reason.
What kind of a stupid idiot put in a whole cabbage, unpeeled and unwashed carrots and a whole onion without even removing its upper skin.
The answer was: apparently Alaina.
But if she takes it out now wouldn't he notice it and further laugh at her? But then she can't really feed Aria with a dirty soup that had onion skins floating around in it.
Trying to save herself a trip to embarrass land, she chucked her hands into the pot that had the vegetables and water, she began rubbing the vegetable with water making it look like she was actually doing that to wash up the ingredients.