FORT SILL — A Comanche County woman who prosecutors said used a 12-year-old girl to lure Marines to sex parties has been sentenced to 10 years in prison.

Amy Marie Rivera, 34, of Fletcher, was sentenced Thursday after she pleaded guilty to procuring a child for lewdness or other indecent acts, records show.

The victim lived with Rivera for two months before her June arrest.

Lance Cpl. Logan Bryan Combs, 20, of Lawton; Jordan Patrick Kinshella, 19, of Maple Valley, Wash., and Curtis Grant Dorton, 20, of Twentynine Palms, Calif., are charged with first-degree rape in connection with the case.

The Marines were stationed at Fort Sill. Combs and Dorton are in jail on $30,000 and $25,000 bail, respectively, a Comanche County sheriff’s office spokesman said Monday. Kinshella is free on $25,000 bail.

The men are accused of assaulting the sixth-grade girl who accompanied Rivera to hotel parties where they participated in sex games and used alcohol and drugs, according to court records.

Combs told authorities at the time of his arrest he thought the girl was 17 and that "he didn’t even know her last name.”

Rivera and the girl also engaged in "lesbian play acts” for the Marines, kissing and slapping each other, county prosecutors said.

Rivera and the victim attended six to eight parties at Lawton hotels between March and June 2009, court records state. During that time the victim claimed to have engaged in sex with three Marines and kissed and touched others, all with Rivera’s knowledge, records state.

Kinshella’s preliminary hearing is set for Friday. Dorton and Combs waived their rights to a jury trial and are waiting for a trial date, according to a spokeswoman in the district attorney’s office. The victim was placed in a shelter after Rivera was arrested.

In a statement released last year, authorities at Marine Corps headquarters in Quantico, Va., said they were cooperating with law enforcement authorities.