Dr. Tiff is the school nurse.
She has two distinct personalities: Normally a sweet and kind one but at the drop of a hat, she'll switch and fly into a rage, during which she swears heavily.
Every time you enter her room, there's a 1/20th (5%) chance you'll trigger a scene, causing the Berserker plotline to start. It's possible to trigger this scene the very first time you enter her room.
She's weak to tickling.
When mad, her eyes turns red.