N.M. Code R. § 8.11.5.19
The adult, his personal representative, the conservator or guardian or any other interested persons, including the department, can petition the court for removal of the guardian/conservator and request the appointment of a successor, if in the adult’s best interest. The court can remove a guardian or conservator, modify, or terminate a guardianship or conservatorship on the basis that the guardian/conservator:
[8.11.5.19 NMAC - Rp, 8 NMAC 11.5.19, 10/30/08]