(Eugene, OR) -- A former Weyerhauser Company employee is headed to federal prison for defrauding her employer out of four-and-a-half-million dollars over 15 years. A judge sentenced 62-year-old Susan Tranberg of Eugene yesterday to nearly five years in prison and ordered her to pay over five-point-three-million dollars in restitution. Court documents say Tranberg submitted fraudulent invoices for payment to a fake vendor she created.