Theresa was last seen in Alvin, Texas sometime in approximately September 1980. She lived in the 1800 block of Highway 6, near the city of Alvin. Theresa's sister, Brenda, was in Houston, Texas and was expecting Theresa to go there and give her a ride home, but she never arrived and has never been heard from again. Theresa was driving a primer-gray late 1960s model Chevrolet Impala or Chevrolet Nova at the time of her disappearance; it has never been located. She also hasn't renewed her driver's license since her disappearance.