Five children, Ten souls

FNaF fanfic.

Shinobu was a normal teenage girl. If not more of a rebel. After a fight with her parents she wanders the streets. As she starts to hear voices in her head she starts that she is finally going insane. One day she meets a girl named Mangle, who seems to be following her. As she hears Mangle's voice she realizes it is the same as one of the voices in her head. She dismisses it and goes in her way. When she is attacked she meets a boy named Foxy and as he learns that Shinobu has met Mangle he explains that they share a soul that does not belong to them and that they don't even have souls anyway. Thinking that she has finally gone insane she meets a boy who has the same problem and explains that they are being hunted. As she travels on this path further she uncovers secrets no one ever much about.
The next question is: What choices will she make and what will it take to stay alive?