Taken Away — Patty Friedmann

In the midst of the biggest natural disaster in American history--Hurricane Katrina--15-year-old Summer "Sumbie" Elmwood's two-year-old sister disappears from the hospital after open-heart surgery and Sumbie is the prime suspect. But in the chaos of New Orleans after the storm, no one is looking for just one little girl. Sumbie must find her missing sister and enlists her two would-be boyfriends to help her, hoping against hope that it's not too late.