69.—In the application of this Part in relation to a child who is married—

(a) the references in sections 57, 58, 60(3), 61(7), 62 (except subsections (1)(b)(ii) and (2)(b)(ii)), 63, 65, 68(2) and 70(1)(b) to a parent or guardian of the child shall be construed as references to his or her spouse,

(b) the references in sections 58(2)(a), 60(3), 61(7), 63, 65 and 70(1)(b) to an adult relative of the child shall be construed as including references to his or her parent or guardian, and

(c) section 64 shall not have effect.