GREAT FALLS, Mont. (AP) — A Montana woman accused of orchestrating a marijuana robbery that led to the stabbing death of a Great Falls high school student was sentenced to 40 years in prison.

The Great Falls Tribune reports Brianna Coombs was sentenced Friday after pleading guilty to a felony robbery charge last year.

Authorities say Coombs and her boyfriend Joseph Knowles robbed 18-year-old Megan Meriwether in September 2016. Knowles stabbed Meriwether after she resisted and pulled her own knife.

Knowles was sentenced to 60 years in prison in December.

In a statement to the court, Coombs apologized, saying she wished she could take Meriwether's spot so her family "could have their little girl back."

Coombs' sentence includes 10 years suspended and 518 days credit for time already served.

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Information from: Great Falls Tribune, http://www.greatfallstribune.com