Severus Snape had come to the manor the next day, reporting that it had been Dobby the house elf who had rescued the dungeon prisoners. He had taken them to 12 Grimmauld place, where members of the order had been waiting for them. When Harry had asked him to return for Hermione, others had spoken up and prevented the rescue attempt. Having someone who could apparate through the defenses of Malfoy Manor was a secret that needed to be covered up. They couldn't allow the dark side to know about. Besides it would give them a clue as to where Harry had been taken by Dobby. Moody had pointed out that as much as they might all be fond of the young witch, she was a muggleborn and less vital to their causes.