A mother who lost her daughter in a car accident has found comfort in letters that she left behind. For Cindy's Mathis' birthday last year, her daughter Macy, then 16, wrote her inspiring letters. In the midst of Cindy's grief, she'd forgotten all about them. But she found them at just the right moment. "It was about a month after Macy had passed. I was cleaning out my trunk and I found one letter," Mathis told InsideEdition.com. "I grabbed it and I screamed bloody murder."