She heads straight for Mrytle's bathroom. It's a testament to their months spent working together that Cedric follows without question.

"Open," she whispers, in a forgotten tounge, watching the stairs descend.

She throws her-goblin made-broach at Cedric. "Soak this in Basilisk venom and come find me."

He nods, and she's off.

She leaves Snape to Theo and makes her way to the Hospital Wing.

While the Professors raise their defenses and Pomfrey escorts the remaining children - she builds a mobile hospital.

A voice echoes across the castle, and she curses.

The deadline is set.

3PM.