"Two days after yous first night," Sally explained, simply. "Miss Hermione be very tired, need to rest a lot. Master Harry came in and did the prettiest spells on you, too. You sleep like baby Ally after them. Though Master Harry not sing lullabies to you. Sally thinks this for the best, Miss! Master Harry be good at a lot of things ... singing lullabies not high on his skill set, though!"