Fan Casting (Young) Severus Snape

It's a Sirius Black love story, the girl MacKenzie Black (formally Andrews) is given a necklace by Minnie before entering the great hall. When she enters she sees Remus and Nymphadora dead, then Fred (her godson) and hugs him. Later she is with Harry, Hermione, and Ron on the staircase when a searing pain takes over her body and she opens her eyes. She notices she's still in the same place but by herself and not destroyed. Going to the great hall she opens the door and sees the marauders plus the female marauders.