Their son was too smart and too paranoid for his own good, but Hermione couldn't disagree with him. It was a big gamble to just accept that September 1st would indeed be a day of peace. Even more of a gamble to believe that the students wouldn't be harmed at Hogwarts. Twenty years might have come and gone since the last war. That didn't mean she couldn't still remember how the students at the castle were often used against their parents. Luna Lovegood was removed from the Hogwarts Express and kept in the cellar at Malfoy Manor to ensure that her father stopped printing pro-Harry Potter articles in his magazine. They would be foolish to believe that it wasn't within the realm of possibilities that the same would happen again. If Rodolphus wanted to lure Hermione out of hiding, he wouldn't hesitate to use her son.