Stephanie Nicole Bramlett pleaded no contest to willful cruelty to a child and had several charges dropped including second-degree murder.
A 1-year-old boy was killed after he was found with serious injuries and his mother and her boyfriend were arrested in July of 2010.
Around 2 p.m. on July 7, 2010, deputies from the Mojave and Boron substation responded after receiving a report of a child not breathing in the 2660 block of Prospect Avenue in Boron.
When deputies arrived, paramedics were there and had arranged to have the boy airlifted to Loma Linda Medical Center for treatment, police said.
Further investigation revealed the boy had sustained a head injury from an unknown source of trauma, deputies said.
Deputies said the boy also had bruising to his face, torso, and left shoulder area consistent with long-term physical abuse.
There were two other children in the residence, the boys twin sister, and a 3-year-old boy, police said.
Both children displayed bruising, scratches, and signs of physical abuse, according to police.
As a result of the investigation, 23-year-old Stephanie Nicole Bramlett and her live-in-boyfriend, 25-year-old Adam Parrish, were arrested on charges of willful cruelty to a child, which were later elevated to second-degree murder after the toddler died.
Bramlett is the mother of the 1-year-old twins and had moved in with Parrish about three weeks prior to the incident, according to authorities.
Parrish is the father of the 3-year-old boy.
Bramlett will be sentenced on July 7, 2016.