Father got loan from a nationalised bank and mortgaged his House. Afetr some time father expired leaving behind him wife and a minor son. Wife approached another Bnak for further loan. another bank takeover the previous loan and wife herself and onbehalf of minor son mortgaged entire house and further submitted affidavit and also signed entire loan document but she could not maintain the acoount hence her account declared NPA and Notice 13(2) of sarfaesi issued and also possession under sec.13(4) obtained. Wife filed a suit in civil court on behalf of minor that mortgage of minor`s share is void as no permission was obtained by the mother. what is remedy available to the Bank?