Suzanne Collier's Second Book of Mysteries and Mayhem

Leaving the safety of her home with Nana in Kansas, Suzanne travels on trains to reunite with her family. She has many adventures on the way. Her long-suffering father keeps her from danger when he can. She saves cattle from rustlers and a friend from kidnapping. Once settled in a new home, she rescues an elderly woman and helps a bully become a friend.