My Year of Courting Disaster by Danelle Hall

A stowaway on Mandy's book tour turns a simple trip from point A to point B into a race for survival. Somebody wants Mandy's good friend Earlene and doesn't care how he gets her. Mandy, former wife, government documents librarian, and the mother of two troublesome adult children, survived a year in a yurt and wrote a book about it. She survived the problems brought on by sudden wealth and the kidnapping of her daughter. Now she has to survive her book tour.