Grandmother gift deed property to second daughter, first daughter and her husband refuse to vacate

Hi, My grandmother got the property from her parents (its in village and no proper documents though). She has 3 daughters and during first daughter marriage she gave some agriculture land and money(during 1970's). My mother is the second daughter and during my mothers marriage 3 acres was given. post the marriage of my parents, my parents(second daughter and son-in-law) took care of entire family with their hard earned income 1) built a house for grandmother on land she got from her parents, 2) took care of third daughter education from her 15 years and got her married with their own expenses, 3) took care of all post marriage rituals for 30 years just like their own daughter, 4) took care of medical expenses of grandmother, 5) they even took care of first daughter and her 2 daughters to get married with their societal status, helped them financially during this process they let the first daughter and her husband to stay with grandmother in the village house built by them from last 20 years as they are in town on work. Post the death of my father, they tried to create documents with forged signature(non registered though) and also was paying property tax on their name without us knowing. Recently we got hold of the forged documents and property tax receipts and confronted them as the house built was always deemed to be my father's from the time he came into the family as second son-in-law. Post the confrontation, my grandmother gift deed the house and lands to my mother(second daughter) for all the things they have done for the family(with the consent of the third daughter too). However now first daughter and her husband are refusing to leave the house and claiming part in the grandmothers property or demanding money. my grandmother is 87 and my mother(61) is required to stay with her now to take care of her, however first daughter and her husband abusing my mother and grandmother with foul language, spoiling the reputation at village, threatening to suicide or sometimes they even threatened to kill grandmother. Please advise how to get them evict at the earliest, can we file a criminal case for forgery, abusing, spoiling reputation in village, and threatening to suicide or kill. If yes what all evidences required for filing case against them(got audio with their foul language and threatening to kill grandmother) Thanks in advance.