A Long Island mother of three was found dead in a car in Suffolk County Saturday — and a suspect has been charged with her murder, according to cops. Juliann Bachmann, 30, of Bellport, was found injured and unresponsive in a vehicle at the Speedway gas station in Yaphank just before 7:30 a.m. Saturday, according to the Suffolk County Police Department. After police discovered her, Bachmann was rushed to the NYU Langone Hospital — Suffolk in Patchogue, where she later died.