(Portland, OR)  --  Police are investigating the death of a Gresham woman reported missing last week.  Police found the body of 49-year-old Jeana Beck Friday night in a canal behind the Rodeway Inn in Lincoln City.  Beck was reportedly staying at the motel with her 23-year-old son for a work trip.  Family members say she disappeared Thursday night after stepping out for a cigarette.  Police say they don't suspect foul play.