Federal prosecutors are asking a judge to sentence Jordan Graham to life in prison.
Graham pleaded guilty to second-degree murder in U.S. District Court in December.
The newlywed pushed her husband of just eight days, Cody Lee Johnson, off a cliff in Glacier National Park.
The case went to trial in December, but Graham pleaded guilty to the second-degree murder charge before the jury was given its instructions for deliberation.
In court documents filed Tuesday, Assistant U.S. Attorneys Zeno Baucus and Kris McLean recommended a life sentence or a minimum of 50 years in prison followed by supervised release.
Assistant Federal Defender Andrew Nelson and Senior Litigator Michael Donahoe wrote that Graham prays for a sentence of 10 years with five years supervised release to follow.
A sentencing hearing is scheduled for Thursday, March 27 at 9 a.m.