Ohio’s 2nd District Court of Appeals affirmed the May 2011 conviction of 33-year-old China Arnold.
Her Dayton attorney, Jon Paul Rion, did not immediately return a call seeking comment Friday.
A Montgomery County jury convicted Arnold of killing her 28-day-old daughter, Paris Talley, by putting her in a microwave oven in 2005. Arnold was sentenced to life in prison.
It was Arnold’s third trial. The first one ended in a mistrial. She was found guilty in the second, but the 2nd District Court of Appeals reversed it.
Prosecutors have said Arnold intentionally put the baby in the oven and turned it on after a fight with her boyfriend, Terrell Talley, the baby’s father.
Rion had argued that someone else was responsible, and much of the evidenced pointed to Talley.
Talley testified that Arnold told him that, “I killed my baby,” and that the infant would still be alive if he hadn’t been unfaithful to her.
Rion said that was taken out of context and that Arnold only meant that she failed as a mother by allowing the crime to happen, not that she killed her child.