A shocking video was presented in court showing a 14-year-old girl playing with her phone in her kitchen in Mississippi just seconds after executing her mother. Carly Gregg appeared before the judges, accused of murdering her 40-year-old mother and attempting to murder her stepfather on March 19.

In the video, the teenage girl is seen entering the kitchen, walking back and forth in the hallway, then briefly disappearing from the camera before returning, holding something behind her back and looking into the kitchen. She then walks off-camera again in the opposite direction, just before three gunshots are heard. After the first shot, a woman’s scream is heard, followed by silence.

Shortly after, Gregg is seen sitting calmly on a stool near the kitchen counter, sending messages on her phone while her two dogs watch. Her mother, math teacher Ashley Smiley, had been fatally shot in the face. According to prosecutors, the girl used her mother’s phone to send a message to her stepfather in an attempt to lure him back home.

“When will you be home, sweetheart?” the message read, according to court documents. When her stepfather returned, the 14-year-old shot him, injuring his shoulder. He managed to wrestle the gun away from her before she could shoot him again, and the girl then fled the house.

Earlier, according to police, Gregg had sent a message to one of her friends, asking her to come over because of an “emergency.” When her friend arrived, the 14-year-old allegedly asked if she had ever seen a dead body before and led her to her mother’s corpse.

In his testimony, the stepfather said that Gregg had once been a “sweet little girl” but that on that day, she looked as if “she had seen a demon.”

A psychiatrist who examined the 14-year-old also testified, stating that, in his opinion, Gregg experienced “memory loss” for 90 minutes on the day of her criminal act.

Additionally, he mentioned that the girl had told him she had been experiencing “auditory hallucinations” for years before the crime, though the voices in her head had never “ordered” her to do anything. She also confided that she had started smoking marijuana several times a week and was worried her mother would find out.

The 14-year-old is charged with murder, attempted murder, and tampering with evidence and faces a life sentence if found guilty. Her defense team is trying to use the argument of mental illness in hopes of securing a reduced sentence.