I just love Ann Martin, and this book made me love her even more. She has written a fantastic story about sisters and family. Pearl is the younger, 4th grade sister to middle school age Lexie. Pearl tries hard (usually) but just can’t understand why Lexie acts the way she does. When the girls’ grandpa comes to live with them in their cozy apartment, the girls are forced to share a room. Pearl is thrilled with the chance to observed Lexie up close. Now, just maybe, she can figure out her big sister once and for all!

Older fans of Beezus and Ramona books will love this sweet, but realistic, look at the complicated relationship between big and little sisters. A perfect book for 3rd-6th grade girls.