(adsbygoogle = window.adsbygoogle || ).push({}); 7-year-old Sloan Mattingly has been identified as the little girl who fell into a sand hole with her brother and got trapped on Tuesday at a beach in Lauderdale-by-the-sea in Florida. Sloan died and her 9-year-old brother, Maddox, was critically injured. At about 3:16 p.m.,...