Just thought i give a little background information on Olivia and Jack Kelly. First Jack Kelly actual name is Francis Sullivan he changed it so it would be harder for Snyder and the cops to find him. Second When Olivia was 10 Jack ran away to become a Newsie Jack was 12 at the time and they are two years apart and Olivia wrote the letter to Jack when she was 13 and would be 15 but when Jack received the letter it was two years latter making Jack 17 and Olivia 15. Also their father was put in jail when Olivia was 10 and Jack was 12, Jack left a couple months after due to their mom becoming abuses towards Jack and only caring about Olivia. Also Spot and Olivia already know each other. And the only people who know that Jack has a sister are Spot,Race,Cruchie,Specs,and Smalls who is the leader of the Bronx.