Call the District or Circuit Court's probation department at the Courthouse at 517-543-7500 and ask for the probation officer who is assigned to the case. The probation officer can help you get your money if restitution was a condition of the defendant's probation and if the defendant is still on probation.
If the probation has expired and your restitution has not been paid in full, see a private lawyer. A criminal case restitution order is a court order that expires only when the restitution has been paid in full. If the court-ordered restitution covers all of your claims, then you do not have to separately sue the defendant. You can enforce the criminal case's restitution order like any civil judgment (e.g, garnishment of wages, attachment of property, etc.).