Erin Mongar of Grand Rapids, 35, was the getaway driver in a murder in Owosso. A judge sentenced Mongar to 35-60 years in prison for second-degree murder.
Otis Smith Jr. and Anthony Holloway, both of Grand Rapids, were convicted in October for the deaths of 31-year-old Joseph Carson and 39-year-old Anthony Hammond, both from Flint.
Their bodies were both found in a store's parking lot in Shiawassee County.
Smith Jr. and Holloway are awaiting sentencing.
Police say the killings came after a deal to sell marijuana that was arranged online through Craigslist.
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