When Abby's best friend, Jessica, moved away, Abby was beside herself. But time has passed, and the gap Jessica's absence left in Abby's life has been filled by new friends, especially Hannah. Jessica's done a lot of changing, too. She calls herself Jessy now, and instead of baggy overalls, she now wears hip teen clothes. She even has a boyfriend! Although things are different now, Abby and Jessy eventually find that they still have a strong bond.
Also in this book, Abby deals with feelings of jealousy as Hannah spends more and more time with Abby's boy friend (not boyfriend!), Casey.