23-year-old Ashley Kline had been missing for two weeks.
Authorities told WFMZ-TV Monday that human remains found Sunday at a wildlife refuge in Clay Township, Pa. are Kline's.
Investigators say her body suffered significant trauma. They believe she was murdered.
Kline was last seen on December 30th leaving her home with friends.
Kline's father said his daughter suffered from lead poisoning when she was a child and had the mental capability of a 15-year-old.
Police are working to identify suspects and a motive for her murder.