April 23, 2019 at 6:49 am LOS ANGELES (CBSLA) — The second of two sisters struck by a big rig truck as they walked to school has died. Amy Lorenzo, 12, died Monday at a hospital. She had suffered major injuries in the April 4 crash that killed her 14-year-old sister, Marlene, as they crossed 37th Street at Broadway in a crosswalk. The sisters were on their way to school when they were struck by the semi. The driver stopped at the scene of the crash and was not arrested.