Mississippi teenage killer Carly Gregg sobbed in court Friday as she was found guilty of ruthlessly gunning down her mother and wounding her stepfather after they found out about her “secret life” with drugs earlier this year.

The 15-year-old sobbed as she was found guilty on all charges including first-degree murder, attempted murder and tampering with evidence. She will spend the rest of her life in prison without parole.

The verdict came after the jury viewed chilling surveillance video of the baby-face teen awkwardly shuffling around their Brandon home — clutching a gun behind her back shortly before she shot her mother Ashley Smylie, 40, a math teacher at Northwest Rankin High School, in the face.