A teenager has been sentenced to 18 years in prison for her role in the death of her half-sister, who police say was beaten during a re-enactment of the "Mortal Kombat" video game.

Heather Trujillo pleaded guilty in May to child abuse-negligently causing the death of 7-year-old Zoe Garcia. Trujillo's prison sentence may be suspended if she completes six years in a Youthful Offender System program.

Trujillo and 17-year-old Lamar Roberts were baby-sitting Zoe last December. Authorities say Zoe died from head injuries after she was hit, kicked and slammed to the floor. The teens were reportedly re-enacting the video game.

Seventeen-year-old Trujillo has agreed to testify against Roberts, who is charged with child abuse causing death.