A. Guardianship proceedings shall be started by the filing of a petition. Any person eighteen (18) years of age or older, the child if he or she is twelve (12) years of age or older or any representative of the Indian Child Welfare Department may file a petition.

B. Any person eighteen (18) years of age or older and subject to the jurisdiction of the Juvenile Court may serve as guardian.

C. Preference shall be given to relatives and to the person preferred by a child twelve (12) years of age or older; however, in all cases, the Court shall determine the guardian on the basis of the best interests of the child.