A family of four traveled from Indiana to South Florida for a beach vacation, only to have their world upended: Their 7-year-old daughter, Sloan, died Tuesday when a hole she had dug in the sand collapsed on her and her brother, burying them. Their parents were identified in a GoFundMe as Jason and Therese Mattingly, residents of Fort Wayne. Sloan’s 9-year-old brother, Maddox, was also in the ...