Father in Law(Senior citizens) and mother in law (Cancer patient) harrased by dauhter in law.

My 2nd son marriage a khasi girl back 13 years ago. After some year my daughter in law and my son separated from us and live other places in rent house. Where they have a baby girl. Then i buy a land for them and registerd on my son name. After some days they fights one against in some personal matters. We trying our best to suggest them not to fight..but both of them not interested in our advice. Therefor I give an application to court to fired my 2nd son from my family property everything i hv. Then the court also give affidavit to the matter. From 2015 june month I hv not any relation to my son and his family. But being human i take some care of the baby girl bcz they dont take care of her. Now after three years of court affidavit my daughter in law file a case at some local women welfare organisation against his husband and pull me and my family to their personal quarrel. The woman organisation called a meeting on 1st may 2018..where we have to attend force fully. In that meeting daughter in law writtenly take all the land which was in my 2nd son name and after that she demand me Rs.10 Lakhs as compensation and take signature of my in woman organisation letter pad. I m a retired teacher and had high pressure, diebates, bone problem etc. my wife was suffering from cancer for last ten years.. my other two sons are unemployed how can its possible to give 10 lakhs Rs. To her. We all have to die to earn 10 lakhs rs in one year. Now daughter in law mentally harras me and my cancer sufferd wife and my family to give her 10 lakhs rs within 1 year. What will now we do.. plss help us. I am belong to Hindu family.