When Daisy sat up and asked "Are you going to have dinner with us?" It sounded more like Are yew gongtu haff dinner wiff us? She was still in the midst of three year old speech, and was lifting her little hamburger to her mouth again.
"Oh, Daisy, I'm sure that this man is terribly busy," Severus said, glancing once from his dark-haired daughter to her savior. He wouldn't mind the company, to be honest, but he didn't want the man to feel obligated. He'd already assisted so much.
David took that moment to start clapping, knocking his bottle over into the french fries and scattering them across the table.