Disowning unmarried daughter with disability

I have a disability since past 6yrs (my certificate says 10percent but it's more and I've raised it with disability commision). My father's behaviour has always been less favorable to me compared to my brother and sister. I was always there for the family in times of crisis and expected to do the needful as eldest child but when it came to dividing property my father was unfavorable supporting my brother due to which there was a dispute between us. Post this I got disabled and my father refused to take me home unless I sign documents giving up my rights to properties . In the past 6yrs his behaviour has been mostly abusive and only few times he has supported me. He has spent just rs20000 in past 6yrs on my medicine cal treatement compared to a huge amount I have had to spent. He abuses my mother as well smd has poisened her against me by saying he abuses her since she supports me due to which she has also stopped supporting me. She supports only occasionally. Other times she is cruel in her words too. My money is almost getting over and I'm not getting any jobs. They are unwilling to give me money fur treatement or inheritance as per proper division between my siblings while they have taken loans and liquidated assets to support my siblings especially my brother who is also 30yrs himself. Now they are telling me to pack my bags as they want yo shift to a rented place and give our place on rent. I feel all these are tactics to displace me and move me out of property owned by my parents. I asked police if I can complain against abuse but they said they will investigate if I do as even my parents are senior citizens and also my parents can remove me from my house since my mother says they will if i complain. Can I go to court to claim maintenance and property division as per sharia/indian law without the threat that my father will disown me if i do so (in which case there will be no case since I don't be hus daughter anymore)? They are dmart and threaten me saying they will say I harass them etc. please advice.