This 16-year-old believes her dad was using self-defense after cops say he beat a man to death at a gas station in Arizona. Melvin Harris was waiting for his daughter outside a QuikTrip as she went to use the bathroom. That's when she says Leon Armstrong tried to get into her stall. She told her father what had happened but now says she regrets telling him. InsideEdition.com's Leigh Scheps (http://twitter.com/LeighTVReporter) has more.