Carly Gregg has not yet decided whether she will testify in the murder trial

A 15-year-old on trial for murder has not yet decided whether she will testify in her own defense. Carly Gregg was 14 when the March 19 shooting occurred at the family's Brandon home. Gregg is accused of shooting her mother, who was a teacher at Northwest Rankin High School, where Gregg was also a student. The charges were dismissed Tuesday. On Wednesday, Rankin County District Court Judge Dewey Arthur first asked Gregg if she wanted to testify. “I want to wait for the testimony,” Gregg said. The first witness called by defense attorneys was identified as one of Gregg's close friends. Arthur has prohibited the media from using video or audio recordings of underage witnesses. The witness testified that Gregg told them both before and after her arrest that she was hearing voices in her head. The witness also testified that Gregg seemed normal at school on the day of the shooting. Gregg's stepfather, Heath Smylie, testified for a second day. He was asked about his relationship with his wife, Ashley Smylie, and Gregg. He smiled when shown photos from his wedding day. On Tuesday, the jury viewed surveillance video that shows Gregg seemingly calmly walking through her family home before three gunshots are heard. The video was recorded from a surveillance camera in the kitchen of the home where Gregg lived with her mother, Ashley Smylie, and her stepfather. Gregg can be seen walking past the kitchen with her hands behind her back. A few seconds later, three gunshots and a scream were heard. Gregg then went back into the kitchen, sat down and picked up her cellphone. Gregg's stepfather testified during Tuesday's trial. Prosecutor Kathryn Newman asked him to describe what happened when he entered the home on the day of the shooting. “Everything seemed pretty normal. I came in and as I opened the door to the kitchen, a gun shot me in the face before the door was – I don't know – three or four inches wide,” Heath Smylie said. “It all happened pretty fast from there. It's a blur.” Heath Smylie said the gun went off twice after that, but after the first shot, he had his hand on the gun. He said Gregg shot him from about a foot away. His shoulder was grazed by one of the bullets. “She was screaming like crazy, scared,” Heath Smylie said. “Like she'd seen a demon or something.” Gregg is being charged as an adult. If convicted, she faces 20 years to life in prison. Carly Gregg caseVideo from a home shows Carly Gregg and what appear to be three gunshots. Jury hears 911 call from teen murder suspect's stepfather after he was shot and girl's mother was killedProsecutors say Carly Gregg smoked marijuana the day before shootingTeen murder suspect fit to stand trialCarly Gregg rejects plea dealRankin County teen charged in shooting death of mother to stand trial in September14-year-old girl charged as adult in shooting that killed mother, injured stepfather