Husband and wife(both TN govt employees), after marriage, from self-earnings bought 4 properties jointly registered in different periods. Total sale consideration of all 4 properties amounts to 18.0 lakhs. The couple actually paid more than the sale considerations through cheques and cash. The couple has no child. Husband recently died without making will. Mother of diseased filed case against DIL in Sub-court asking 4.5 lakh, ie ¼ of 18.0 lakh as per Hindu Succession Law. Is there any legal option to say NO to the well-off MIL.