Ariel Lovegood, or Ariel Black. Depending on who you ask. Older sister of Luna by three years. Ariel starts attending Hogwarts at the start of her third year, the start of Luna's first. When both girls are sorted into Slytherin along with Ginny Weasley, Ariel captures the attention of a couple of redheads. *slight AU - Luna and Ginny being Slytherin and all. Not overly Dumbledore