two people with similar stories one light and one dark but can the light over power the dark

Hermione Granger Gryffindor know-it-all or Annastia Pendragon Wizarding Princess ron ginny molly and dumbles bashing Harry and Hermione

Tris and Caleb live with there abusive father and have just moved to a new school Caleb being the golden child only gets the occasional harsh word but Tris is beaten daily but no one knows and that's how she wants it to stay but when she meets four everything changes can it stay a secret for long? This is my first story please don't be to harsh