N.C. Gen. Stat. § 48-3-602
If a parent as described in G.S. 48-3-601 has been adjudicated incompetent, then the court shall appoint a guardian ad litem for that parent and, unless the child already has a guardian, a guardian ad litem for the child to make a full investigation as to whether the adoption should proceed. The investigation shall include an evaluation of the parent's current condition and any reasonable likelihood that the parent will be restored to competency, the relationship between the child and the incompetent parent, alternatives to adoption, and any other relevant fact or circumstance. If the court determines after a hearing on the matter that it will be in the best interest of the child for the adoption to proceed, the court shall order the guardian ad litem of the parent to execute for that parent a consent as provided in this Part or a relinquishment as provided in Part 7 of this Article.
N.C. Gen. Stat. § 48-3-602