• Grandfathers Will dispute

Hello, my grandfather unfortunately pssed away in May 5th 2012, in his final will and testament to which there were credible witnesses of the will and his health and mental state at the time, he had left his land in the name of me and my farther according to his will as most indian men do leave their land to their sons. His house property he had left 1/4 to me 1/4 to my father 1/4 to my grandmother and 1/4 to his daughter. For many years my farthers sister had taken my granfarther to court disputing and trying to claim land from him, dragging him to court every week in his old age causing him much stress and causing many family problems. Following my grandfarthers death she then disputed his will saying that when he was alive she was taking care of him thus it was unfair that she was nor included within the will and the share of property. My farher who is currently in india facing these cases against him and against my grandfathers will has also encountered much distress due to the whole situation he has had to go back and forth from England to India and exhausting loads of money in lawyer fees but the case does not seem to be moving forward at all. Personally I feel that there is no such case as there must be a record of her taking my grandfather to court on many occasions which shows that she was not looking after him at all moreover she was probably impacting his health and causing him more distress. Recently she has begun construction work on the house that we all have a share in and infact she has the smallest share in, she has also broken the locks to my Uncles room who sadly past away in 2006 and my grandfathers and grandmothers room, she has removed all belongings such as old clothes old pictures and burnt them all, which she also has no right to do as again according to the will she has the smallest share in the house and also as the cases are still ongoing she has no right to make any changes to the property and definitely has no right in accessing other rooms of the house that belong to me my father and my grandmother. Witnessing the dispute my uncles wife at the time of his death has also tried to take advantage of our situation creating cases against my farther aiming to claim my uncles land which was on his name prior to his death, however at the time of his death my farther and grandfarther had given her a lump sum of money for her troubles and let her keep all jewlery etc from the wedding and even some of my uncles possessions, since then she has remaried and even has a child in this marriage however in the 2 years she was married to my uncle she had not given birth to any. My farther is completely alone in this dispute as other family members who are also joint land owners with mu grandfarther are scared that she will create cases on them, they say she is crazy and doesn't know how to speak respectfully or within reason the village sarpanch also does not want to get involved with the affairs due to this reason. The cases have been going on since 2012 and i do not want them to go on for a very long time as i have heard other cases do, because personally i feel that given logic reason there is no case on my farthers sisters side. My grandfarthers last wishes were his, i do not understand how they can be disputed when that is what he wanted, and how the courts or my farhers sister have a say in what he wished for or what he wanted after his death. I would just like some advice on the situation thank you sincierly.
Kind Regards,
Prabhjot Singh Shergill