Sabriel by Garth Nix (1995) Harper Collins

A girl is stillborn, then brought back to life by a magician and raised by him.  She is educated outside of the Old Kingdom and taught Charter magic.  In her senior year, almost ready to graduate, she is approached by a dead thing, and she banishes it back to death.  She receives a pack with her father’s sword and magic bells.  So, a quest is set for her to find her father’s body and redeem him from death.  She returns to the Old Kingdom, chased by the dead, who have taken over everything on that side of the wall.  She goes to her father’s home, is joined by his captive free spirit, in the form of a cat, sets sail in a paperwing, crashes into a sinkhole and frees a man trapped as the figurehead of a ship in a King’s graveyard.  All they have to do is find the body of Sabriel’s father, retrieve him from death, then defeat the most powerful dark necromancer of the time.