The Friendship Riddle by Megan Frazer Blakemore
Recommended for grades 5-8
Ruth Mudd-O'Flaherty has two mothers, her ex-best friend Charlotte, has two fathers. That's where their similarities end now. Ruth and Charlotte have drifted apart, and Ruth is trying to figure out if she wants things to be more like they used to be, or if she is better off with new friends. One day Ruth finds a folded riddle inside an ugly old library book. This riddle sets Ruth on a wild hunt through her small coastal Maine town to find the rest of the riddles. Along the way Ruth needs to let people in to help her, and here is where Ruth's friendship journey begins.