I wonder if Ridgway could've murdered this girl in 1992 in Tacoma.
Selena Willingham
A teen is found wrapped in a blanket, dead, in a park
uncovered.com
Clipping found in The News Tribune published in Tacoma, Washington on 7/9/1992.
www.newspapers.com
Selena's death is listed as a suspicious death in Uncovered, though an initial theory was that this was an overdose. IMO, her being wrapped in a blanket matches that.
Selena seems to have gotten into trouble during her life, as she used drugs. There is no word about her being a sex worker.