*** The sales' profits from this book will de donated in all to the scientific research of phts related syndromes*** Life lesson that goes straight to the heart Piper is present to a girl who suffered from a rare disease to aid in her way to get out from her isolation. The dog behaviour is excellent and achives her aim. But as soon as her health status get worse very quickly, her isolation is bigger. With a lot of pain, the girl decides that Piper could not help any more, so the best option for her is to donate her dog to make Piper happier and assist other people such as did with her. The life of each goes by separates ways but finally they met each other and realized that the true love always suceed. Enrique Cormenzana Lizarribar was born in Donostia (San Sebastian) in August 1959. He studied to be a medical doctor in Valladolid and the Basque Country. He is a specialist in general and digestive surgery. He works in the Hospital Bidasoa of Hondarribia. Maria Ercibengoa Arana was born in Irun in 1977. She has a degree in Biology in and a PhD in Microbiology from the University of the Basque Country. She is a research support technician in the Department of Microbiology at Donostia University Hospital. She was diagnosed with Cowden?s disease in the early 2000?s. She is currently creating a website and a register of people with PTEN disorders in Spain.