a heart brokenast bay mother has been making a pblic plea for young people to take tir focus off theirhones and pay more attention to their surroundings. britney silvo ws killed by an amtrack teen may. the family says she was texting and listening music whenthe accident happened. >> she w listening to music, both head pones in. >> cynthia says what she thinks happened to her daughter, britney, as e teen walk across the train tracks before 6:00 p.m. mondanight. >> oki ining down like this, cat see the arms down behind her, had the hephones in, and she coul't hear the train coming. >> 18-year-old britney silva died instantly when the train hit her at high speed. apparently because ofhe ear buds, she did not hear a witness yell for her to get out of the way. >> i tell all of you young ones out there, when you walk down the street and you got your hdphones on, keep one in and one out soyou can hear the world around u. >> she was a senior at the high school set too to the prom this weekend and graduate in june. >> she was always so nice and compmenting people all the time, you know what i m