A nameless body found beside Interstate 80 in Sweetwater County on March 1, 1992, became known as Bitter Creek Betty after a truck driver discovered her frozen on a snowy embankment. The woman was nude except for a plain gold wedding band and a simple gold necklace; pink underwear and sweatpants were recovered nearby. She was described as Hispanic, about five feet eight inches tall, 120–130 pounds, with dark brown hair, brown eyes, a cesarean scar, a scar on her left calf and a rose tattoo on her right breast traced to a Tucson parlor.

The autopsy documented severe facial and neck trauma consistent with manual strangulation, extensive beating to the jaw, and sexual assault; an object driven through the left nostril into the sphenoid bone was also noted. Investigators concluded she had likely been killed elsewhere and dumped from a vehicle sometime between late 1991 and early 1992.

DNA later linked this case to another Wyoming interstate murder and to a 1991 Tennessee killing. Genetic genealogy eventually identified a suspect, and separate genealogical work connected the Sweetwater County Jane Doe to a half-sister, establishing her identity as Irene Vasquez, who had not been heard from since about 1990.

Did anyone who knew Irene recognize the description or remember seeing her along interstate routes in the late 1980s or 1990?