Missouri Couple Charged with Murdering Infant Daughter

Couple accused of abuse, neglect leading to 2-month-old's death

Published on Feb. 25, 2026

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A Missouri couple, Jonathan Gaona and Stephanie Hernandez, have been charged with second-degree murder in the death of Hernandez's 2-month-old daughter, Jaylynn. The medical examiner found that Jaylynn died from blunt force head injuries, acute pneumonia, and methamphetamine toxicity, as well as complications from thermal burns. Gaona admitted to physically abusing Jaylynn due to the stress of caring for her and his other children, while Hernandez allegedly ignored her daughter's injuries and did not seek medical treatment.

Why it matters

This tragic case highlights the devastating consequences of child abuse and neglect, as well as the importance of reporting suspected abuse and ensuring vulnerable children receive proper care. It also raises questions about the role of drug use and mental health issues in cases of parental abuse.

The details

According to the probable cause affidavit, Gaona told investigators that he physically abused Jaylynn, including putting her in a hot bathtub, shaking her head back and forth, and not changing her diaper for half a day, leading to severe burns and other injuries. Hernandez allegedly ignored Jaylynn's injuries and did not seek medical treatment, even when a roommate pleaded for help. Gaona's other children also tested positive for methamphetamine, amphetamines, and cannabinoids.

  • Jaylynn died on February 11, 2025, at 2 months old.
  • Gaona and Hernandez were charged with second-degree murder in February 2026.

The players

Jonathan Gaona

A 33-year-old Missouri resident who was charged with second-degree murder and child abuse, neglect, and endangerment in the death of his girlfriend's infant daughter.

Stephanie Hernandez

A 29-year-old Missouri resident who was charged with second-degree murder and child abuse, neglect, and endangerment in the death of her infant daughter.

Jaylynn

The 2-month-old infant daughter of Stephanie Hernandez who died from blunt force head injuries, acute pneumonia, methamphetamine toxicity, and complications from thermal burns.

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What they’re saying

“I'm a monster, like really,”

— Jonathan Gaona (Probable Cause Affidavit)

What’s next

Hernandez is currently detained at Greene County Jail, while Gaona has been issued a warrant of arrest. The judge will determine if Gaona will be allowed out on bail.

The takeaway

This tragic case underscores the urgent need for better support and resources for families struggling with mental health, substance abuse, and the stresses of parenting to prevent such devastating outcomes for vulnerable children.