Dea Millerberg pleaded not guilty to the desecration charge during a February arraignment.
Millerberg is accused of helping her estranged husband Eric Millerberg dispose of the body of Alexis Rasmussen after she died from an apparent drug overdose at the couple's home in September of 2011.
Dea Millerberg has since filed for divorce from Eric, who stands charged with child abuse homicide, obstruction of justice, unlawful sex with a minor and desecration of a human corpse.
Alexis Rasmussen was 16 years old at the time of her death on September 11. She was a frequent babysitter for the Millerbergs, and used drugs and engaged in sexual activity with the couple, according to court documents.
Rasmussen's body was found in Morgan County more than a month later she disappeared.
Dea is also facing drug charges, and is expected to testify against Eric, should his case get to trial.
During her husband's preliminary hearing in April, Dea Millerberg testified that Eric injected Alexis with methamphetamine on the night that she died.