Ashley Conrade pleaded guilty Friday to aiding an offender after the fact in connection with the death of University of Minnesota student Anarae Schunk.

Conrade, 25, will spend 15 years in prison after the trial of Shavelle Chavez-Nelson, also known as Anthony Lee Nelson, 32, who is charged with killing Schunk. Conrade’s plea agreement requires her to cooperate in the investigation and to testify in Chavez-Nelson’s trial.

Both Conrade and Chavez-Nelson were indicted in July on charges of first- and second-degree murder in connection with Schunk’s death.

Chavez-Nelson, Conrade and Schunk were together at Nina’s Grill in Burnsville, Minn., on Sept. 22, 2013, before Chavez-Nelson shot and killed Palagor Jobi, 23, in the parking lot. Afterward, the group went to Conrade’s home in Rosemount, where Schunk was stabbed to death, according to the release.

Chavez-Nelson was convicted in November for murdering Jobi and is currently serving life in prison without the possibility of parole. Conrade also pleaded guilty to aiding an offender after the fact in connection to Jobi’s death.

Chavez-Nelson’s case in relation to Schunk’s death is set to go to trial on May 11.