New York State Police are investigating a fatal crash on the Thruway that killed a Spring Valley woman in the early morning hours of New Year’s Day. Troop T Commander, Major Jennifer Gottstine, says 26 year-old Mardochena Louis slammed a Mercedes into the back of a tractor trailer that had stopped in the right southbound lane in Chestnut Ridge to assist a car that had become disabled. She was pronounced dead at the scene by the Rockland County Medical Examiner. The incident occurred as a tow truck was loading the disabled car. Police say the driver of the tractor trailer had set up orange hazard triangles. He was uninjured, but a passenger in the Mercedes, 35 year-old Quinten Jackson, also of Spring Valley, was taken to Westchester Medical Center with multiple injuries in serious but stable condition.