Distress caused by Mother in Law

I am married for 11 years and have a son who is 8 years old. My husband is a Brahman and I am from a lower cast (obc). Although we are happily married, and our father in law supported us, we were asked to move out of the family home the day we got married by my husband's mother and two brothers. We have been living separate from then on. My elder brother in law stays out of the country and younger one didn't have stable source of income. We used to take care of their family expenses as well with ours. My husband was running a small by successful business, but was very stressful on him, we were also paying salary to younger bro in law for the sake of it. He wasn't performing any task for the salary he took. My mom in law along with my elder sister in law always spoke bad about my caste and character. But she stopped it for a while when we started helping them financially. When I was pregnant we decided to move to my father in laws farm (his self earnt property)and start dairy farming. We pooled together all our savings and with a loan from bank(land as collateral by my FIL) we developed the abandoned farm, built a house to stay and also built a shed to house the live stock. My mom in law wanted my father in law to move out of the present house in Mysore, she would constantly fight with him. So he was happy about the farm and came with us. Everything was fine until my father in law was alive. He was staying with us in the farm. From the day he died about four years ago, my mother in law has taken over the farm which is now generating an annual income of over2 lakhs coz of the development we did there and has been harassing my husband with false police complaints. Although we have filed a partition suite they are prolonging the case intentionally with unsubstantiated claims. Now every time she and her son (my brother in law)gets an opportunity in any family gathering she defames me by blaming my cast and below average looks(compared to her other two daughters-in-law) for our misfortune and financial duress. Now her comments are worse than it was before. Can I file a harassment complaint against her and my brother in law