Martina Menard had been charged with second-degree
murder, accused of killing 34-year-old Shannon Castaway on March 9.
Court records say Menard pleaded no contest after prosecutors lowered the charge and dropped another. Valentine radio station KVSH says Menard was sentenced on Friday.
An arrest affidavit says Menard told officers that she stabbed Castaway with a paring knife and hit her in the face with a bat.
Menard told officers that she cleaned up the blood, took a shower and went to a friend's house for a haircut.
The documents didn't say what led up to the violence.
