I swear I'm normal (Split fanfiction)

You were just a girl with a traumatizing past who got invited to a classmates birthday party when you and three other girls get kidnapped. You soon learn that this man has multiple personalities and has plans to offer all four of you to this beast. You have a problem though. You have a split personality, you were the normal girl that not many people liked because of your obsessions with geeky stuff, you were Memphis. But your other personality was someone who likes to kill.she likes to murder the people that hurt Memphis either physically, mentally or emotionally. She was called Amber. You usually have control over her but if you get hurt she fights her way out. She's much stronger and angrier than Memphis. Will these personalities of Kevin find out about your past? Will they discover that you are like them? Well, read to find out.