US District Judge Donald Molloy sentenced Jordan Graham, 22, who had pleaded guilty to second-degree murder just before closing arguments during her December trial.
Prosecutors argued Graham was having second thoughts about her recent marriage to 25-year-old Cody Johnson when she lured him to a steep cliff in Glacier Park on July 7 and pushed him over.
Graham had faced a maximum sentence of life in prison at today's hearing. Prosecutors dropped a first-degree murder charge and a count of making a false statement to authorities.