The last person to see Stephanie Rosado alive was her roommate on Easter, 2009.
Detectives conducted a search based on a cyber tip that alleged someone at the home was searching for sexually explicit images containing children.
The deaths of an Audubon couple have been determined to be the result of a murder-suicide.
During an investigation, detectives located surveillance footage that captured the incident. Witnesses identified Jose Rios, 19, as the shooter.
She was also sentenced to an 18-month concurrent sentence for throwing bodily fluids on a law enforcement officer.