The Lost Hero p.43-55

As soon as they come upon Camp Half Blood, Leo is automatically claimed by Hepatitus. Piper was not yet claimed and Jason didn't need to be. They all knew that he was the son of Zeus just because of how he controled the skies. Piper kept wondering who her mother was. She kept hoping that she would be a daughter of Athena because of her strenght and courage. She even chose a knife that belonged to Helen of Troy without even knowing.