Forgery harassment defamation

I am writing this in behalf of my mother in law. She is 60 years old. She has 2 son. My father in law remarried with another woman 22 years back. And they kicked her out of the house. Since then she was tortured by my father in law and by his family, many times she tried to live in her husband's home, they kicked her out. They newer provide any single penny for her. Her brother in law snached her all ornaments because he has to pay some debts of my father in law. And they promised her to they will give some gold jewellery later ,but never did. when my husband grew up and get married in 2007 he took the responsibility of her. Since then she is with us. In these 14 years too my father in law, his brother, dewar (yonger son of my mother in law) insulted my mother in many times in front of many persons, many time used filthy language. My mother in law is a diabetic ,hypertensive and cardiac patient. She required proper care and medical treatment time by time. We are not capable enough(financially) to take care of her properly. In 2007 my father in law kicked out my husband from his home. My father in law was having some dispute with my brother in law i, 2017. Then my brother in law come to my mother in law and asked her to come with him and go to father in law's home. She went with her younger son. After sometime my father in law and brother in law conspired and sold that house too. Again my mother in law was kicked out. My father in law had many properties. Father in law was a stroke patient and got whimsical occasionally. Now he is dead, and my brother in law said that his father give all property and everything to him. Again he misconduct with her mother. He tourtured her mentally, threatened her burn alive and kicked out of his house after funeral of his father. Along with this he is not ready to keep her in his husband's house. Not want to pay any medical or maintenance expenses.