Oh yes, she had sounded quite stupid. She could tell. She'd heard Sherlock respond in almost the exact tone of voice when she had said something blindingly obvious. It really was a bit unnerving that those two were so similar. Still, she supposed, that was at least a small part of the appeal.
She glanced into his cart and frowned slightly. From the looks of it, he didn't actually have any food that didn't require a microwave of hot water to make. Her own cart was filled with actual food. She might not be the best cook in the world, but she'd managed to survive on her own for a while. She looked back up at him. "You don't seem to have gotten much actual food," she said after a moment. "I mean, it is food, but..."