The Future of Kimmy Brown

Ellie Kona is a normal college student. She finds a notebook on the floor one day, next to a trash can. She opens it to see who it belongs to. She sees the words, Kimmy Brown will die from a murderer in 7 days. She finds Kimmy Brown at a cafe, and becomes friends with her. 7 days later, Kimmy is dead. The notebook rules then states that she would have to save them before they died...