Detectives say Martina Westcott shot 33-year-old Terrell Bruce once in the head while he was driving before he barreled into another car.
On Monday, Westcott admitted in court she pulled the trigger. The two had allegedly been arguing before shots were fired.
The incident happened back in December 2016 while Bruce was driving down Walnut Lane.
Westcott's sentencing hearing has been set for August.
If convicted, she faces up to 57 years in prison.
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