"I don't know that I have ever said a curse word from this bench, but you may be the vilest bitch that I have ever met," Bibb County Superior Court Judge Howard Simms told Amanda Arellano on Thursday,The Macon Telegraph reported.
Simms then sentenced Arellano to 30 years in prison and lifetime probation.
The 29-year-old Fort Valley woman was arrested along with her boyfriend, 29-year-old Daniel Kelly Copeland, in January 2012, after Copeland's father reported them to police.
Copeland's father told authorities his son had admitted to sexually abusing Arellano's two daughters, then ages 6 and 8, according to The Albany Herald.
The sex acts, authorities said, took place between Sept. 1, 2011, and Jan. 18, 2012.
According to Bibb County Prosecutor Nancy Scott Malcor, Copeland told police he and his girlfriend started doing drugs in September 2011, which made them "especially sexual."
Arellano, the prosecutor said, would help the 8-year-old girl perform sex acts with Copeland, including sodomy and oral sex. She would also hold the girl down while Copeland had sex with her.
The 6-year-old was subjected to similar abuses, including oral sex and attempted rape, authorities said.
In April, Copeland pleaded guilty to rape and four counts of aggravated child molestation.
As a condition of a plea agreement, Copeland was sentenced to 25 years in prisonfollowed by lifetime probation. Copeland also agreed to testify in Arellano's case.
Arellano, who was scheduled to go to trial later this month, opted to plead guilty on Thursday, to a number of offenses, including rape and aggravated child molestation.
During Thursday's hearing, prosecutors said Arellano confessed to participating in sex acts with Copeland and her daughters, and also admitted taking photographs of the sex acts.
"I'm so sorry and I will punish myself more than you can probably ever punish me, sir," Arellano said in court Thursday, according to The Digital Journal.
Simms was unmoved by Arellano's words and told her there is a "special place in hell" for people who do what she and Copeland did.
Per the conditions of their plea bargains, neither Arellano or Copeland will be eligible for parole. Once they serve their entire sentences and are released on probation, they will be classified as sex offenders.