Busy writing up her list, Lydia didn't notice she wasn't alone until it was too late. She managed to only jump a little bit, to her credit. Lifting her face to the ceiling, she took a deep breath before setting the notebook down and smiling at Stiles. He was just a kid, none of this was his fault. "I'm making a list of things to buy at the grocery. What are you doing?" Dropping into a crouch that put her at his level (take that, she was finally taller than him), she raised a brow and playfully poked at his stomach.