The book of Hat / Harriet Rowland.

"Hat - was 17 when she was diagnosed with osteosarcoma, a rare form of cancer that starts in the bones. Living in Wellington, New Zealand, Hat has fought the disease for three years and found a friend in cancer sufferer Hazel from John Green's novel The Fault in Our Stars, duplicating her trip to the Anne Frank House. In 2013, Hat celebrated her 20th birthday and mixed with the stars of the new Hobbit movie - both things she never expected to do. Since her diagnosis, Hat has kept a blog called My Experience of Walking the Dog and the posts are collected in this book, edited with the author's blessing. Why the blog title? Her family says cancer is like a dog - fine if it stays in its own yard. Hat's dog got out. This is her unexpected story"--Publisher information.