 A 23-year-old grand rapids woman was sentenced today to 30 and a half years in prison after previously pleading guilty to second-degree murder in the death of a hibbing man. Katelyn Greninger received a sentence consistent with Minnesota Sentencing Guidelines after admitting to using a machete to decapitate a 20-year-old David Heyman in June of 2016. In August, Greninger's testimony helped to convict her boyfriend, 36-year-old Joseph Thorsten, of two counts of first-degree murder. Thorsten was sentenced to life in prison. If you've enjoyed this segment of Lakeland News, please consider making a tax-deductible contribution to Lakeland Public Television.