Oh. My. God. What a waste of a book.
Not only did it take half the book to finally enter the shed, but once it did it got even more dull and boring. Charlie gives everything, literally everything, up to give this old dog—who has already lived a long lovely life—extended time. Who cares. Why would you enter the fairytale land if no harm could be done to you outside of it?
The only good character in the book was Howard and he is dead.