(CBS) ORLANDO, Fla. - A judge sentenced Sarah Adleta, a 29-year-old Florida mother, to 54 years in federal prison Monday for sexually abusing her children and producing pornography of the acts, reports the Orlando Sentinel.
U.S. District Judge Roy B. Dalton Jr. said the case was among the most "horrific" he has seen, according to the paper.
Prosecutors said Sarah Adleta and her former husband, 25-year-old former Marine officer Jonathan Adleta, made having sex with their two children a part of their "parenting plan," the paper reports.
Sarah Adleta pleaded guilty to two charges in May and testified against her ex during his trial last month.
During the 29-year-old's sentencing hearing, mental health counselor Cherilyn Rowland Petrie reportedly testified that the couple's daughter, who was 4-years-old at the time of her parents' arrest, was malnourished, not toilet-trained, was at the developmental level of an 18-month-old, and had "sexualized" behaviors.
Sarah Aldeta's father also made a plea to the judge during the hearing to give his daughter the maximum sentence.
Sarah Adleta begged the judge for mercy, saying she was manipulated by others and will be "haunted" by her actions for the rest of her life.
Jonathan Adleta will be sentenced in December.