The Gift of the Pirate Queen — Patricia Reilly Giff

Grace O'Malley is doing just fine taking care of her father and her youngest sister, Amy. She certainly doesn't want her cousin Fiona from Ireland to move in and take over. Grace has enough to worry about, what with Amy's diabetes and her own problems with her teacher.

But Fiona arrives and tries to fit in with the family. It's hard, for Grace, until the day Fiona shares her story of the brave pirate queen named Grace O'Malley. The tale makes Grace wonder: Does she have the courage of the pirate queen?