This is a sweet and heart-wrenching book. Isla, the narrator has a compelling voice, and is very likeable- she is selfless, and her relationship with her family is very strong. Harry, the sick boyfriend, though really shines. Their blooming relationship is innocent, and it is fun to watch it unfold. The loner swan brings them together and parallels their adventure. Spoiler below!!!The only thing I don't like is that it did not give me closure on whether Harry makes it through his transplant. But then again, sometimes the open ended ending really is the best, because you are always rooting for the patient to pull through and for the romance to continue, but as Lurlene McDaniel has proved, there is just something about death that can also make a perfect ending, because it is sad, beautiful, and reflects reality. But, I don't know about real statistics, but the book said 50/50 chance, so in the end it is left to the reader to decide, or you can take her dream of Harry being a swan and migrating as he didn't pull through, or you can find hope in his text and say that he did.