Police said the shooting happened as Jessica Johnson and Edward Roscoe were driving in the 500- block of east 103rd Street on April 25, 2021.
Prosecutors said Johnson was behind the wheel when Roscoe shot her five times.
30-year-old Jessica Johnson of Gary, Indiana died from the shooting.
At the time of the shooting, Roscoe was out on bail for a gun case.
In December 2020, the couple's 4-month-old boy died of a skull fracture when Roscoe allegedly dropped him.
Prosecutors also said that Roscoe allegedly choked Johnson unconscious during a fight in front of their children.
He also pushed her to the ground that same day at a gas station and threatened to kill her.
In December 2021, Roscoe was arrested in Houston, Texas.
More than four years later, Roscoe pleaded guilty to one count of first-degree murder.
A judge sentenced him to 27 years.
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