Mont. Code Ann. § 50-20-508

A parent, a legal guardian, or any other person may not coerce a minor to have an abortion. If a minor is denied financial support by the minor's parents, legal guardian, or custodian because of the minor's refusal to have an abortion, the minor must be considered an emancipated minor for the purposes of eligibility for public assistance benefits. The public assistance benefits may not be used to obtain an abortion.