GRAND RAPIDS — Stacy Lynn Ahlgren, a former employee of Northwestern Bank in Ludington, was sentenced to federal prison for embezzling nearly $1 million from the bank over nearly six years, Mlive.com has reported. U.S. District Judge Robert J. Jonker on Wednesday, April 17, ordered Ahlgren, 39, to prison for 27 months, followed by supervised release for three years. He also…