Commentary on Sections Part 1 - Adoption Chapter 4 - Status of Adopted Children Section 67: Adoptive relatives
Subsections (1) and (2) enable a relationship that exists as a consequence of section 66 to be described in law as an adoptive relationship. An adopter may be referred to as an adoptive parent or as an adoptive father or an adoptive mother depending on the circumstances of the case and any other relative of any degree under an adoptive relationship may be referred to as an adoptive relative of that degree. However, it does not prevent any term not qualified by the word "adoptive" from being treated as including an adoptive relative.
Subsection (3) provides that where there is a reference to the adoptive mother and father of a child, if the child has been adopted by two persons of the same sex who are a couple, or by a partner of the child’s parent, where the couple are of the same sex, the reference is to be read as a reference to the child's adoptive parents.