Her mother discovered her body inside a car that was parked in the garage of their home on the 2600-block of South Homan in the Little Village neighborhood.
The victim's brother said his sister was about to head for work when she was shot.
"It had to be someone she knew, you know someone, because she's very consistent with her work schedule. So, she leaves at 5 o'clock every morning. She was up at 5 o'clock in the garage, you know, and her car was started. So, obviously, it was someone who was waiting for her," said Guadalupe Gordillo, victim's brother.
An autopsy was scheduled for later Saturday.