Forensic Expert Reveals HORRIFIC Details Regarding DNA Results on Athena Strand’s Body: Two DNA Profiles Found—Was There Another Accomplice Involved in Her Death Alongside Tanner Horner?

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April 23, 2026 • 5 min read

VOICES FROM THE FORENSIC LAB AND A MOTHER’S UNBEARABLE GRIEF: THE TRIAL OF KILLER TANNER HORNER

The murder trial of Tanner Horner has become a harrowing confrontation between cold scientific evidence and monstrous depravity. As forensic experts testified about the DNA traces left behind, the courtroom fell into a heavy silence, faced with the brutal reality of what 7-year-old Athena Strand endured.


1. Truth in the Samples: When DNA Speaks

Taking the stand, Kristen Cossota—a forensic scientist at the Texas Department of Public Safety (DPS) Crime Lab with over a decade of experience—presented a detailed report on the processing of the sexual assault kit collected from Athena’s body.

Under state law, sexual assault kits must be prioritized and processed within 90 days. Cossota explained that her team focused intensely on oral, vaginal, and anal swabs to search for traces of the predator.

STR and Y-STR Testing: The Chains of Evidence

Forensics utilized two advanced DNA testing methods to reconstruct what happened inside that fateful FedEx van:

  • Autosomal STR Testing: This analysis looks at DNA from both parents and is highly effective at individual identification. The results showed a strong presence of DNA from both Tanner Horner and Athena Strand on clothing stains. Notably, while the vaginal swab suggested DNA from Athena and an unknown individual, the links elsewhere remained powerful.
  • Y-STR Testing: This method focuses exclusively on male DNA passed down the paternal line. It is the key to finding traces when male DNA is limited or mixed with a female victim’s DNA. In the oral and anal swabs, the results concluded that Horner “cannot be excluded.” A partial male DNA profile from the oral swab was entirely consistent with Horner’s paternal line.

In forensic language, “cannot be excluded” carries immense weight. It means that despite any degradation of the samples, the biological markers found match the perpetrator, debunking efforts to deny his presence during the most sensitive and violent moments of the assault.


2. “I Wasn’t There When She Took Her Last Breath”

While the first half of the proceedings focused on cold scientific terms, the atmosphere shifted into a storm of emotion when Maitlyn Gandy—Athena’s mother—took the witness stand.

She described Athena as “the perfect mixture”—vibrant, full of life, and a girl who loved both princess dresses and playing in the dirt. “She was free and wild and bright and loving,” Gandy said through tears. Athena didn’t just want to be loved; she lived to give love to everyone around her.

A Frantic Journey Through Despair

Gandy recalled the moment she learned her daughter was missing. In a state of total panic, she drove from Oklahoma to Texas in a fraction of the usual travel time. “I felt as though I was having a heart attack, but I kept telling myself she would be found.”

The pain was compounded when she arrived at the scene but was barred from joining the search. Police instructed her to remain in her vehicle so as not to interfere with the search dogs. For two days, the mother could only watch from a distance, praying for a miracle that never came.


3. The Grim Reality Behind the Curtain

When Wise County Sheriff Lane Akin finally broke the news that Athena was dead, Gandy fell into a state of extreme shock and denial. She screamed that he was wrong. She demanded to see her daughter immediately for confirmation, but her request was denied.

The reason? The condition of Athena’s body was too horrific. What Tanner Horner had done to a 7-year-old child left marks that no mother should ever have to witness.

It wasn’t until December 6, 2022, that Gandy was finally allowed to see her daughter. She and her family personally prepared Athena’s body for burial. She meticulously noted the injuries and the discoloration on her daughter’s skin. She dressed her in a hospital gown, and later, in her favorite dresses, socks, and the oversized hair bows that had become a cherished family joke.


4. Questions That May Never Be Answered

Facing the man who stole her daughter’s life, Maitlyn Gandy did not ask for an apology, believing a man like Horner would never tell the truth. However, she still demanded answers.

“I want to know everything,” she stated firmly. She wanted the details of Athena’s final moments, the location of her missing shirt, and what her daughter’s last words were.

“I was there when she took her first steps and said her first word. But I wasn’t there when she took her last breath.”

Gandy’s testimony closed a haunting session of the trial. The forensic DNA evidence locked in Horner’s presence, while a mother’s words painted the true picture of the cruelty involved. Science can tell us “what” happened, but a mother’s grief reminds us “who” was lost—a bright, innocent soul crushed by a monster devoid of humanity.


Forensic Conclusion: Though Horner seeks to justify his actions through claims of mental health struggles or a troubled past, the DNA evidence on Athena’s body stands as undeniable proof of a violent and calculated assault. Justice for Athena Strand now rests in the hands of a jury that has witnessed both the chilling scientific facts and the soul-shattering grief of a broken family.

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