Cricket Readers Recommend

This is an amazing story I just finished . It's about a boy who has a skin condition on his legs so he doesn't go to school. He lives with his father in an old motel because his mother died from cancer. One day he meets a girl named Sistine. She was named after the Sistine Chapel. He had read all about this place and he soon makes friends with Sistine. One day he discovers a tiger locked up in a cage in the woods. Later the owner of the motel shows it to him and says he'll pay him two dollars every time he feeds the tiger. He gives him all the keys to the cage. He's only supposed to unlock the little door on it to throw the meat in, but Sistine wants to help the tiger to let him go free. The boy, Rob, is sure that he should because a lady that's a cleaner at the motel told him a story about one time when she had a little pet bird, and she decided to let it go, and it got eaten by a snake. Rob isn't sure what to do. He is pressured by Sistine to let it go, but he's not sure what would happen if he did. You'll have to read the story to see if Rob let's it out and what happens to it.

(Warning anyone who can't stand sad story's DON'T READ THIS!!!)