Costs of petitions may be charged to trust property unless affected persons lacked notice and the right to be heard. Costs and incidental expenses of petitions under the Act are in the discretion of the Court, which may direct that whole or part of such costs be met from the property or income of the trust or borne and paid in such manner and by such persons as it thinks fit, provided that no order shall be made against any person (other than the petitioner) who has not received notification of the petition and had a reasonable opportunity of being heard.