Once they had finished, Snape waved Hermione away when she tried to clear the table and sent everything flying towards the sink himself with a flick of his wand. A second flick and the sink filled up with hot, soapy water and began washing themselves. He gestured for her to follow, and they adjourned to the study where he sat at his desk and gestured for her to sit in a chair he had moved to sit opposite him.