A southern Illinois woman accused of playing a role in the 2010 death of her teenage half-sister has pleaded guilty to a charge of home invasion. Dakota Wall entered the plea Tuesday in exchange for Perry County prosecutors dropping murder, kidnapping and burglary charges. She faces up to 30 years in prison when sentenced May 21st. Wall was among several people charged after the investigation of the slaying of 15-year old Sidnee Stephens of Pinckneyville. Authorities say Stephens was shot and strangled before her body was found in a creek near Pinckneyville. Two other men are serving prison terms in connection with the case. A third defendant was convicted for the murder but killed himself in jail before being transferred to state prison.