Sale of Property

I am a Roman Catholic living in Mumbai. Both my parents have passed away. All my siblings are married except me (we are total 5). The only papers my father has is the Share Certificate which was transferred to my eldest brothers name after my fathers death. The Form of Nomination (Original & Duplicate), where my father has mentioned in the event of his death should be transferred to my eldest brother. My dad has also mentioned to nominate 4 of us in the nomination, dividing it equally 25% each. 1. He has left out my elder sister's name in the nomination (she is married) - Does she have a right to a share? 2. My younger married sister has just passed away in 2018 (25% share) - so does she still have a right to her share? 3. I am in dire straits, I have absolutely no money at all. I do not earn much that I can even pay monthly bills. My eldest brother is harassing me for the house papers & he is not willing to sell the flat cos of this ( I have been advised in the past by a Priest not to sign any papers given by them & also a lawyer told me not to give the papers to him cos I will be on the street. I have also been told to be careful even with the xerox copies of the house papers), . 4. In the past, one lawyer has told me I can approach the court & that my brother will have to collect his share from the court. Is this really true? 5. What are the legal fees for asking the court to sell the property? How costly & lengthy is this? 6. I have read you have to have a valid reason why you want the house to be sold, can my having no money be a valid reason? I would be grateful for some advice on the above. Awaiting your reply Thanking you