This frustration bit into her repeatedly but even then, Hermione knew it was not the time to act—Neville and Luna still owed Draco their answer. Though Hermione would still have liked to take them along with her, she knew Luna was right. Though she had the power to force them to escape, it would only increase the risk of the plan going badly, and she wouldn’t abuse her power to force them to do something they didn’t want—if they joined Draco, or rejected him, then that was their choice, and she would honor it as she would honor her promise to George.