Mother in law mental harrasment

My mother in law is a widow and after our marriage we use to stay together me, my husband and my mother in law...she was very good with me for two years but later on she started her taunts...she started her restrictions on me like She never wanted that I sleep with his son or I shouldnt go out with him... I should do all the household work... Not to go to work....And she use to do all the drama so that I don't do any stuff.... I should stay only with her and work....after all the taunts and harrasment I added more money and took a house.... We both happily schifted there... Now my mother law started all drama and coming at our place again and again fighting with us and going her home back...again and again coming to fighter banging all neighbor doors doing all drama torchering us.... Telling all lies to every one that we are bad and don't keep her with us... He gave her bad words.... We hurted her etc.... Wat should I do.?... Wat section can I file her complain ? Next time she comes should I take her to police?