The Fifth Daughter of Thorn Ranch By Julia Brewer Daily – Lone Star Book Blog Tours. Genres: Women’s Fiction / Contemporary Western / Family Saga. Emma Rosales is the heiress of the largest ranch in Texas—The Thorn. All the responsibilities of managing a million acres now fall into her fifth-generation hands. A task Emma could handle with her eyes closed…if The Thorn were any ordinary property. The Fifth Daughter of Thorn Ranch is a family saga as large as the state of Texas.