Mericle stands accused of fatally shooting her boyfriend, James David Barron, through a door in their home. The prosecution has argued that Mericle became ‘unhinged’ after discovering Barron’s alleged infidelity and financial support of another woman named Lilia. In contrast, Mericle’s defense team maintains that she acted in self-defense, claiming Barron was abusive.

The state’s case was bolstered by testimony from Matthew Mefford, an investigator with the Hall County Sheriff’s Office, whose appearance on the stand concluded on Monday. Mefford’s testimony began Friday, during which the court viewed a three-hour interrogation video of Mericle made on the night of the shooting.

Additionally, Mefford read aloud notes saved in Mericle’s Notes app, which appeared to be unsent messages or personal journal entries expressing her feelings about Barron. These notes were presented as potential insights into Mericle’s mindset leading up to the incident.

Prosecutors concluded their questioning with internet search data from Mericle’s phone. According to the report, Mercile searched the Hall County jail roughly three hours before she first called 911 the night of the shooting. The defense pointed out that those searches were deleted according to the report.

Mefford was also asked to read notes that were saved in Mericle’s Notes app that appeared to be messages she was going to send to Barron or journal entries documenting her feelings about Barron.

The defense had Mefford go through body camera video and his own interrogation video, stopping at various points to ask questions. One of the points was about Mericle continuing to ask investigators whether Barron was alive while she was being questioned the night of the shooting. 

“It seems to me, and you can disagree with me if I’m wrong, she seemed to want to know if he’s alive or not before she’s gonna tell you about the things that have happened. Do you agree or disagree?” Brett Willis, Mericle’s attorney, asked.

 “Disagree,” Mefford responded.

“Tell me why you disagree,” Willis asked.

“I think she was cleaning up the scene. She knew that she had made a mistake and she was trying to figure out, I think she probably knew he was dead because she did make a comment that there’s no pulse, but she’s just at this point trying to figure out the story she’s going to stick with,” Mefford explained from the witness stand.

Mericle said during the initial interrogation and on body camera video that she was trying to shoot the lock off the bedroom door because Barron locked himself inside with her phone, journal, and keys. The bullet ultimately went through Barron’s arm and into his chest, killing him.

Investigators believe he was standing along the wall next to the door based on where his body fell, but Brett Willis, Mericle’s attorney, argued there was no way Mericle could have known where he was in the room when she shot her gun.

“If she’s announcing ‘I’m about to shoot,’ Wouldn’t you think you’d go further back into the room or the closet? There’s a closet in there, right? There’s a closet there,” Willis said.

“Coming around, yes, but I can’t speak to that. I just know that he was standing off to the side. He was not standing directly in front of the door,” Mefford responded.

The defense’s cross-examination also revealed text messages sent between Mericle and a man named Charlie. Willis said Mericle told investigators that she was considering leaving Barron because of the situation with Lilia. 

Willis had Mefford read text messages between Mericle and Charlie, which started just a few days before the shooting. Charlie expressed his admiration for Mericle and asked to see her again. Mericle told him she was going to talk to Barron about their relationship.

Mefford confirmed Mericle deleted all but two messages between her and Charlie. Those two messages were sent between 9 and 11 p.m. the night of March 7, 2025. 

Willis asked Mefford what Mericle’s new motive would be for killing Barron that night if she already knew about what was going on with Lilia and was considering leaving him.

“That’s what’s new, is the Charlie English stuff?” Willis asked.

“But that’s not new to Ms. Mericle, that’s only new to Mr. Barron, right?” Willis said.

“Allegedly,” Mefford answered.

“It’s not going to enrage or unhinge Ms. Mericle to find the text that she knows she’s got, right?” Willis asked.

“Yes, but also keep in mind we cannot confirm that he didn’t know, but I would assume and make the assumption with you that he didn’t,” Mefford said.

The defense also asked the judge for a ‘directed verdict.’ This is where a judge takes the case away from the jury and grants an acquittal if they feel like the prosecution did not provide sufficient evidence to prove its case. The judge in Mericle’s case denied the defense’s motion.