Ignore Myrtle.

"I can't do anything about that, Myrtle", you snap, barely able to keep your annoyance out of your voice. "I have other things to do."

"What things?" Myrtle asks.

"I'm a Champion for the Triwizard Tournament, and I've also got a tonne of homework", you reply. "I've got enough on my plate without your stupid problem as well."

"My stupid problem?" Myrtle says, her voice rising in volume. "Just because you're a Champion, that means that you can ignore everyone else?"

Myrtle's voice is now loud enough for others to hear. You can see heads turn in your direction, trying to work out what the fuss is all about.

"Sorry, Myrtle", you saw, raising your hands appeasingly.

"Sorry?" she yells. "It's too late for sorry! You haven't visited me for years, and now, you insult me!"

You take a step back, and Myrtle swoops at you. You duck, and step out of her way, and she flies past. As you straighten up, you hit your head hard on a low shelf, and fall to the ground with a moan. The edges of your vision go black, and before you pass out, you see Myrtle swoop at you again.