Kimberly N. Steeley, 27, has been charged with two counts of manslaughter in the June 2018 deaths of her twin infant children, according to police reports.
Liam and Bonde Steeley were less than two months old when they died 11 days apart, both of asphyxiation, both while sleeping with their mother in the East Worcester home she shared with her parents and boyfriend, the twin's father, according to Otsego County District Attorney John Muehl.
According to police, Bonde died June 5, 2018 and her brother died in the same manner June 16, 2018.
"She originally said they died in their bassinet, but later she told the police they died while sleeping with her," Muehl said.
Steeley, whose parents own the house at 185 Skinner Hill Road in the town of Decatur, was arrested Wednesday by the Otsego County Sheriff's Department after a nearly year-long investigation done in conjunction with the New York State Police.
"It just took us a while to finalize this," Muehl said. "We were trying to be slow and deliberate, to get this right."
Muehl said he believes the grand jury did not believe there was an established motive, and did not want to charge Steeley with murder, but they did believe she knew and ignored a substantial risk to the safety of the children.
"I just think the grand jury did not think there was specific intent to kill," he said.
Steeley was charged with two counts of a Class C felony for second degree manslaughter, and is being held on $10,000 cash bail or $100,000 bond. She will appear in court June 3 at the Otsego County Court at 197 Main St. in Cooperstown.
According to police reports, Steeley has previously been arrested on a 2017 count of driving while under the influence of drugs.
Several baby registries from 2018 list the twins' father as Thomas Hewitt, also of East Worcester.