Once Oliver was safely tucked away upstairs deep in a snit, Hermione couldn't bear to keep sitting where she was with her mind tearing off in a hundred different directions. She needed some answers or she would explode. Pointing her wand at the door her son just closed, she muttered a locking spell that would keep him inside until she was ready to release him. It wouldn't do for him to come out of his room only to find his mother was defying orders he was expected to follow. She did not plan on being gone long enough for him to even realize she'd left, but she had to be cautious. What she was about to do was likely very foolish.