Rights of widow daughter in law and grand son

rights of widow daughter in law and grand son-----I am 30 years old widow and i have one son who is 7 years old. We are staying with my father in law and mother in law since my marriage in one independent bedroom and shared kitchen and bathroom. I am also handling the ancestral business since marriage. 1. As regards the above house that is on the name of father in law and mother in law equally. Although most of the payment was made by husband but i have no proofs except one joint housing loan of my husband and in laws 2. As regards the ancestral property that was allotted to the father of my father in law (Great Grandfather of my son) and thereafter it was transferred on the name of my mother in law with fabricated documents 6 years after the death of great grand father of my son. 3. None of the property was on the name of my husband. What reliefs i can avail regarding stay in matrimonial house, maintenance, continuation of ancestral property and rights of my child relating to property and maintenance and stay. My in laws are trying to throw both of us from home as well as from ancestral business after the death of my husband. ------This question relates to sister of my friend for proper justice