I searched Arizona civil, criminal, probate, and family court cases on the superior court database, and there were no cases of any type for Audrey Selvage.
In 1993-94, according to address records, Audrey lived on East Apache Trail, Apache Junction, AZ. This is in far east Phoenix and is an area that, at that time, had many retiree mobile home parks and apartments. If Audrey was buried by the state, it may mean she had no assets, no family, and no means for burial, so the state handled it. She was about 77 years old when she died.