Why do I want to write a new fanfic for rosalie hale? Basically, it would be as if Rosalie discovered a young girl who was on the brink of death, and turns her into a vampire she’s 13 as the story goes Rosalie would be the mother figure to this young girl, and there would be a lot of setbacks as her mind ages, but her body doesn’t, and we would see how that would impact a vampire in such a young body.