A 51-year-old woman was struck and killed in South Richmond Hill after a driver stopped to let her cross with another woman, when her vehicle was rammed by a second motorist, striking both women. A woman was struck and killed and another was injured while crossing Liberty Avenue at the Van Wyck Expressway service road in South Richmond Hill on Saturday afternoon, according to authorities. Police from the 106th Precinct on Sept. 20 responded to a 911 call of two pedestrians struck at the intersection and found a 51-year-old woman pinned under a vehicle and a 34-year-old woman on the roadway. EMS rushed both women to Jamaica Hospital Medical Center, where the 51-year-old woman was pronounced dead a short while later, police said. There have been no arrests, and the investigation remains ongoing by the NYPD Highway District’s Collision Investigation Squad.