You and your girlfriend were at Prom, and were having a great time, especially since Tiffany Falconer was there! You weren't friends, but Claire practically worshipped the girl, and even though you were indifferent towards Tiffany, for your girlfriend, you followed along and worshipped Tiffany along with her.
Currently, the person who had been elected for the prom queen, Lori, was running up to the stage, looking almost... Scared? Claire tries to stop her, but is unable to.
"I hope you're happy!"
Claire yells after them, before someone in a mask and red rain coat with an axe comes up and... Cuts Claire's leg off. She screams in pain, but the killer then starts going after Lori.
You rush to Claire, as she lies there, crying and screaming in pain. You immediately grab her, leaning her against you to try and help her out of there.