The Hastings Tribune says the 36-year-old was sentenced earlier this week in Furnas County District Court to 12 to 20 years for conspiracy to commit a felony.
The woman already had been sentenced in Buffalo County to 80 to 90 years in prison. She'd pleaded no contest and was convicted of conspiracy to commit child sexual assault and of two felony counts of child pornography possession.
The Associated Press is not using her name to protect the identity of the girls. The AP does not usually identify the victims of sex crimes.
The girls' mother has pleaded no contest to nine similar felony counts in Franklin County.