Mullens was last seen in Tulsa, Oklahoma sometime during June 1998. She lived in an apartment in the 2500 block of east Fifth Street. Her husband said they had a violent argument on the night of her disappearance and she left him for another man. Mullens's family did not believe his story and reported her disappearance to police. Mullens was in an abusive marriage at the time of her disappearance. She left behind two small children. She is believed to be missing under suspicious circumstances. Her case remains unsolved.