In September 2013, Kelli Stapleton and her 14-year-old daughter, Issy -- who suffers from severe autism -- were found unconscious in the family van, overcome by carbon monoxide. Police accused Kelli of attempting to kill herself and Issy by placing two smoldering charcoal grills inside the vehicle. In a Dr. Phil exclusive, the jailed Michigan mom, who recently pleaded guilty to a felony charge of first-degree child abuse, opens up about what happened. Why does she say she made such a desperate choice?