Rose returned to the Manor when it was already very late. Unable to Apparate inside the house, she had reappeared outside the walls and walked up the driveway to the back door, of which she had the keys. Draco had personally given them to her, explaining that he didn't want to be disturbed upon his return, but both knew that with that gesture, everything had changed. Rose was no longer just a guest. He had given her his trust along with the keys.