In “The Girls I’ve Been,” Tess Sharpe’s brilliant writing draws us into the lives of the three teens at the center of this young adult thriller. We meet them just as they are on the cusp of being held hostage at their local bank in rural California, and from the first chapter (the chapters are labeled with the time, and the amount of time that has elapsed since they were taken captive), we are mesmerized by Nora and her extraordinary narration of the events that are happening both in the present and also as she intersperses the present narration with snippets of her past that serve to explain who Nora is now.