A minor or person of unsound mind is civilly liable for a wrong done by that person but is not liable in exemplary damages unless at the time of the act the person was capable of knowing that it was wrongful.
Liability Of Minor Or Person Of Unsound Mind For Own Torts -- Exemplary Damages
Mont. Code Ann. § 27-1-711, under Liability.
Mont. Code Ann. § 27-1-711