Gonzalez was taken to Loyola University Medical Center in Maywood where she died.
Police are looking for the car -- possibly a Chevrolet -- with front-end damage.
About 9:45 p.m., Gonzalez was struck by a southbound vehicle, according to a release from Stone Park police.
Gonzalez, of the 1700-block of N. Mannheim Rd., was pronounced dead at 10:47 p.m., according to the Cook County Medical Examiner's Office.
Stone Park detectives have interviewed several persons of interest, the release said.
Anyone with information about the incident is encouraged to call (708) 450-3215.
The Sun-Times Media Wire contributed to this report.