Shearin and her family said police told them they were handling many missing-persons cases, and because Davis is an adult, they needed to wait 48 to 72 hours to do anything about the case.Yes, she is a 20-year-old adult, but my child is not a child who goes and jumps in cars; she is not a child that goes and just runs off, the tearful mother said at last Tuesday's meeting.Henrico police Lt. Eric