SnipSnip Cassie is convinced her big sister hates her. First, Hillary cuts off Cassie's hair (so she won't look like such a ``baby ``). Then she stops talking to her. But Cassie knows a secret about Hillary's biggest fear. And she's going to use it to win her big sister back Go Girl #3: Sister Spirit by Thalia Kalkipsakis and illustrated by Ash Oswald is a story about sisters, full of familiar themes that young readers will be able to relate to their own lives.