Diabetic daughter admits to fatally injecting 81-year-old mom with insulin because she 'got upset'

Kelly and Ethel Moore

Left: Kelly Moore (Tygart Valley Regional Jail). Right: Ethel Moore (Bartlett Funeral Home).

A West Virginia woman is facing between three and 15 years behind bars after she pleaded guilty to fatally poisoning her 81-year-old mother by injecting her with unprescribed insulin.

Kelly Louise Moore, 61, was initially facing a murder charge in the 2023 death of Ethel Moore, but earlier this month she entered a guilty plea to voluntary manslaughter.

“Kelly L. Moore got upset and gave her mother 20 units of insulin in which her mother while a diabetic did not have a prescription for and caused the death of her mother,” said the plea agreement.

Kelly Moore had originally faced a charge of murder, but prosecutors indicated that she lacked malicious intent.

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“It wasn”t premeditated. It wasn’t done with malice,” Taylor County Prosecutor John Bord explained to Law&Crime about why his office offered the plea agreement.

The prosecutor said he was worried a jury might convict the defendant of involuntary manslaughter, which is a misdemeanor. Another issue, according to Bord, is that West Virginia law does not consider insulin a poison.

Bord said Kelly Moore flew “into a rage” during an argument with her mother and injected her with the insulin. While they were both diabetic, only the younger Moore was prescribed with insulin.

More from Law&Crime: Prison nurse who fatally poisoned her husband so she could marry an inmate is headed to prison herself

“It put her into shock,” said Bord.

Kelly Moore immediately called 911.

“I think afterward she regretted what she did,” Bord said.

Prosecutors will complete a pre-sentencing report and then set a date for a hearing where a judge will determine Kelly Moore’s fate.

As Law&Crime previously reported, police and paramedics in Grafton, roughly 140 miles northeast of Charleston, responded shortly before midnight on May 25, 2023, to a cardiac arrest call at an apartment. EMTs arrived and pronounced Ethel Moore dead at the scene, a probable cause arrest affidavit said.

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