N.M. Stat. § 40-3-15
Joinder of minor spouse in conveyances, mortgages and
leases.
A married person under the age of majority may join with his or her spouse in all
transactions for which joinder is required by Section 40-3-13 NMSA 1978 and such
joinder shall have the same force and effect as if the minor spouse had attained his or
her majority at the time of the execution of the instrument.