Refford, a web designer who lives in South Philadelphia, was heading to a medical appointment Friday about 10 a.m. when she was hit by a box truck on the 1200 block of Pine Street. The truck's driver went to make a right turn onto Pine, which has a bike lane, from 13th Street, when he heard a thump and thought he had struck a curb, police said. A witness flagged down the driver, who stopped and is cooperating with the investigation.