"It's a bad bug?" she asked, and eyed the half a lady bug on the ground. Apparently the girl knew that bugs were supposed to taste like, and was disappointed that this particular one didn't taste like it was supposed to. Narcissa sighed, and flicked her wand at the bug once more. It turned into a whole, live bug again, and Narcissa assumed that it now tasted like ladybugs were supposed to taste.
"Try it now," she suggested, a bit hopeful. She wanted to please the little girl for some reason. It was a bit strange for her, to want to please anyone. Let alone a muggle.
Because she assumed this small child was a muggle.