"Hello, Ron," Mayumi greeted the boys, "Slept well?"
"...Why is your tone so sadistic?"
"That's because I'm mad." She smiled and clasped her hands together, "Now you have one day to work up a proper apology before I'll join forces with your brilliant twin brothers and use my prophetic abilities to make your life an absolute hell."
Blanching, Ron fled down the corridor, probably to find Hermione.