Refer the given story carefully and answer the question that follows:
King Metabo
King Metabo was a famous javelin thrower. One day he went out hunting with his daughter, Camille on his back. All of a sudden, the king was attacked by a band of enemies. He had to flee from them until he came to a fast flowing river, which he was unable to swim across because of his daughter on his back. It seemed as if he was lost until he thought of a way out. Tying his daughter to his javelin, he hurled it with all his strength to the other side of the river; then he dived in himself and swam across to where Camille was. His enemies were so amazed that they gave up the chase.
How did little Camille cross the river?