The Chrome Sword (A Percy Jackson/Heroes of...
Before Lycaon was morphed into a werewolf by Zeus, he left his most prized possession, the Chrome Sword, behind at his palace. Centuries later, he retrieved it and gave it to his only child left. Infuriated, Zeus sends out Epimetheus to go kill Lycaon's daughter, for he had killed all of Lycaon's sons centuries before. Epimetheus summons monsters to chase after the girl whose father had broken the agreement. Lycaon has repented, but Zeus does not listen.
Accalia Scarlet, a homeless girl who's mother is in jail, is picked up by a scout and joins Camp Half-blood. She soon enters the camp, where she is claimed, and learns one of her secrets.
She can transform into a wolf.
*disclaimer*- Percy Jackson and HoO characters belong to Rick Riordan