An airport thriller at its best; the bottom of that very deep pile at its worst. The split storyline doesn't serve the literary value of the recovery-from-trauma story or the desperate-criminal-POV story.  And the supposed twists are, instead of recontextualizing events that we didn't understand, just throwing more events at the reader for a highly uncertain purpose. In the end we don't really feel that we know the "Good Girl" any more than we did at the beginning. (And what is that title about, anyway? not a single person in this story thinks she's a good girl, not her, not her family, not the cops, not the criminals... it's not a twist that she isn't a good girl, folks!)