(Portland, OR)  --  Bail is set at a half-million dollars for a 19-year-old, who's accused of hitting and killing a pedestrian and then driving away.  Police say Miranda Ashley Calvin had been drinking at a party prior to the deadly crash Saturday night in Gresham.  Authorities say 49-year-old Jerrie Ann Horning died at the scene and was found lying in the middle of West Powell Boulevard.  Calvin is scheduled to make her next court appearance on May 5th.