The girl was 5 foot 7, 140 pounds with brown hair and blue eyes.
Cold case detective Patty Tackett said, "She has never been found, nor her remains have never been found."
A recent tip led investigators to the area of Hoover and Gunther Avenues, where they have been searching for the body of Sharon Pretorious for several weeks.
Mary Carol Pretorius said the family was filled with hope for the first time in years.
"We went out tp be there because it just started bubbling up," said Marycarol Pretorius, the mother of the missing girl.
Sharon's Uncle, Art Fabian said, "Always wondering where is she? What would she be like? What happened to her?"
Investigators believe she was kidnapped and murdered.
The search has not turned up any new evidence, but detectives are not yet ready to give up searching at the dig site because it is only three miles from where Sharon was last seen delivering newspapers.
"There may be some people who are deceased who are involved in this. I would hope that some family members or anybody who has some information would be willing to come forward," said Tackett.
After 38 years, family members just want some answers.
Art Fabian said, "We are simply looking for information on where Sharon's remains are now. We want closure."
Anyone with information about the Sharon Pretorius case should call Detective Patty Tackett at 937-333-7109.