(4) If, in the opinion of the central authority for Saint Lucia the expense involved in complying with a request for assistance under this Act made by a country outside Saint Lucia, and accepted, would be of an extraordinary nature, the central authority for Saint Lucia shall consult with the central authority for the country as to the terms and conditions under which compliance with the request may continue and, in the absence of agreement in that regard, the central authority for Saint Lucia may refuse to continue further with the request.