Investigators say Mejia parked her car on Clinton west of Cedar just before 7 pm.
When she crossed the road to reach her home, a car traveling eastbound on Clinton hit her.
First responders rushed Mejia to the hospital with major injuries, where she later died.
Officers say the woman was not using a crosswalk at the time of the collision.
The driver remained on scene and cooperated with investigators.
Drugs or alcohol do not appear to be factors in this collision.