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A Pine Ridge woman charged with abusing her children and accidentally killing one of them in May has agreed to plead guilty in her 4-month-old daughter's death.

Mona Goggleye, 31, admitted unintentionally suffocating the infant when she lay over her after falling asleep drunk in the early morning of May 7. She is scheduled to plead guilty to involuntary manslaughter in federal court on Friday.

In a signed statement, Goggleye said she passed out after drinking some alcohol but at some point picked up the baby from her swing. Goggleye woke up to her sister, Joanie, screaming at her, she said.

Joanie's last name was not listed in the document. 

Joanie, who came to drop off Goggleye’s son the morning of May 7, saw Goggleye asleep on the couch with the infant and her other child.

Joanie thought Goggleye was trying to feed the baby, then noticed the child “had vomit on her face and was not breathing,” according to the statement Goggleye signed Feb. 28. Joanie tried to wake Goggleye but was unable to.

Joanie picked up the infant, who was described as stiff and red on one side of her face, and brought her to the emergency room of the Pine Ridge Hospital. A doctor who conducted the child’s autopsy said cause of death was “consistent with an overlay.”

Goggleye registered a blood alcohol content of 0.15 percent, according to the results of a preliminary breath test conducted at 10 a.m. May 7.

Involuntary manslaughter is punishable by up to eight years in prison. Goggleye’s other charge of felony child abuse and neglect, involving the deceased infant and another child, will be dismissed under her plea deal with federal prosecutors.

Goggleye has been released from the Pennington County Jail while her case is being heard at the federal courthouse in Rapid City.

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Cops and Courts Reporter

Cops and courts reporter for the Rapid City Journal from February 2016 to July 2018. Contact her on Facebook or Twitter @tiffgtan.