(a) As used in this article:

(i) 'Petitioner' means a person who seeks enforcement of an order for return of a child under the Hague Convention on the Civil Aspects of International Child Abduction or enforcement of a child custody determination;

(ii) 'Respondent' means a person against whom a proceeding has been commenced for enforcement of an order for return of a child under the Hague Convention on the Civil Aspects of International Child Abduction or enforcement of a child custody determination.