A mother and one of her teenage identical twin daughters were allegedly killed by an elderly man during a petty neighborhood dispute. Jessica Lashly, 38, and Jersey Greer, 17, were shot in the head outside their House Springs, Missouri, home on Saturday night, the Jefferson County Sheriff's Office said. Greer rushed to help her mother, but Winkelman allegedly shot her too. Greer's twin sister Justice, right, was at work at the time of the attackPreliminary investigation revealed that Winkelman had 'ongoing frustrations' with activities occurring at Lashly's residence. She was a seemingly dedicated mother, describing herself in her Instagram bio as the 'proud mother of Justice Ann & Jersey Lynn.'