(Kennewick, WA)  --  Authorities in Washington say a 69-year-old woman who was kidnapped for ransom has been found dead.  Benton County sheriff's deputies say Sandra Harris was abducted Friday, with the suspect demanding money for her release.  Investigators say the suspect, identified as 49-year-old Theresa Wiltse, was later arrested and booked into jail.  Sheriff's deputies say Harris's body was found yesterday morning, about two miles east of Interstate 82.  There's no word on cause of death.