Mont. Code Ann. § 46-24-211

If the defendant appeals or pursues a postconviction remedy or the district court grants a hearing under Title 41, chapter 5, part 25, the attorney general or the county attorney if the case has not been referred to the attorney general shall promptly inform the victim of the notice of appeal, hearing under Title 41, chapter 5, part 25, or postconviction petition, of the date, time, and place of any hearing, and of the decision.