Carly Gregg, the teenager who shot her mother and tried to kill her stepfather, was sentenced to life in prison on Friday.

The jury in Rankin County, Mississippi, found Gregg, 15, guilty on all charges, and prosecutor Kathryn Newman said Gregg had shown “no remorse whatsoever.”

The teen was charged with murder and aggravated assault in the March 19 shooting that killed her mother, 40-year-old Ashley Smylie, and wounded her stepfather, Heath Smylie. She was also charged with tampering with evidence in an attempt to cover up a security camera after the shooting.

On the first and second counts, Gregg was sentenced to life in prison. On the third count, she received 10 years.

Suspect in Mississippi teen’s murder caught on camera in terrifying footage after allegedly killing his mother

During her initial court appearance, Carly Gregg pleaded not guilty to the charges. Her bond was set at $1 million. She is being held in the Rankin County Adult Detention Center. (Rankin County)

The verdict came after a week of deliberations into the shocking murder of Smylie in the family home.

The encounter was captured on surveillance camera in the family’s kitchen, which was shown in court Wednesday. The shocking footage showed the 14-year-old’s seemingly nonchalant demeanor as she took a .357 Magnum pistol into her mother’s room and shot her.

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The video shows Gregg texting her stepfather in an attempt to lure him home and ambush him.

When Heath Smylie testified Tuesday, he said that when he opened the kitchen door, “the gun went off in my face before the door was even an inch or two open, and from that point on everything happened pretty quickly.”

“The gun flashed in my face,” he said. “It went off two more times, but my hand was on the gun after the first shot and I turned it away from Carly.” Heath was shot in the shoulder during the confrontation with Gregg, police said.

The footage shows Carly Gregg moments after she opened fire and killed her mother in March. (YouTube/Legal and Crime Cases)

During the trial, Gregg’s attorney did not deny that the teen killed her mother, but he did attempt to show that the teen was suffering from a mental health crisis and could not remember the shooting.

The five-day trial was attended by expert witnesses and provided insight into Gregg’s mental state.

“Dr. Clark, do you believe based on your experience, expertise, and evaluation of Carly that Carly could understand the nature of her behavior and appreciate the difference between right and wrong at the time this incident occurred on March 19th?” defense attorney Bridget Todd asked Dr. Andrew Clark, a child and adolescent psychiatrist based in Cambridge, Massachusetts.

“I don’t think so,” Clark said.

Carly Gregg on surveillance footage from her kitchen moments after she allegedly shot her mother. (YouTube/Legal and Crime Cases)

In his closing arguments Friday, prosecutor Michael Smith focused on the incriminating security footage, saying Gregg “knew what she was doing.”

“Ladies and gentlemen, there is no doubt that Carly Madison Gregg is the one who murdered her mother, Ashley Smylie. There is no doubt that she was trying to kill Heath Smylie when she pointed the gun right at his head and shot him and hit him. And there is no doubt that she is the one who hid the camera, thus tampering with the evidence,” he said.

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“She knew exactly what she was doing, and she knew the difference between right and wrong.”

— District Attorney Michael Smith

“We would ask that you go back and find her guilty of all three, because she was not insane at the time this happened,” he said. “She knew exactly what she was doing and she knew the difference between right and wrong.”