A verdict has been reached in the trial of Carly Gregg, the 15-year-old accused of the fatal shooting of her mother using a .357 Magnum in March. The teenager from Mississippi was convicted on Friday of first-degree murder, attempted murder, and tampering with evidence.

Over the course of the week-long trial, security footage from the home depicted Carly following her mother, Ashley Smylie, inside their residence. Off-camera gunshots rang out after which Carly, who was 14 years old at the time, was seen in the kitchen on a stool, scanning through Smylie’s cell phone. She is then believed to have texted her stepfather, Heath, tricking him into coming to the house where he was shot and injured in the shoulder during a scuffle with Carly for the firearm.

This horrifying footage from the March 19 incident where her mother was shot was exhibited in a Rankin County courtroom, drawing widespread media coverage. Prosecutors initially proposed a plea deal to Gregg, which would have resulted in a 40-year prison sentence, but she rejected it opting to have her lawyers argue an insanity defense.

During one of the court sessions on Thursday, Carly was observed apparently attempting to suppress laughter—an unclear trigger provoked the laughter, but it occurred right after her attorney wrote something on a notepad. This peculiar demeanor during a critical moment of the trial added an extra layer of intensity to the proceedings.

As the verdict was announced, Carly showed overwhelming emotion, her eyes filling with tears as she processed the guilty verdict on all counts, leading her to eventually break down crying.

The sentencing of Carly Gregg to life imprisonment closes a deeply troubling case that has gripped the nation, underscoring the grave issues and ethical dilemmas posed by juvenile offenders involved in severe crimes. It brings to the forefront debates concerning justice, mental health, and the broader societal implications of crimes committed by youngsters against their family members.