Mother sold her share in the ancestral property of her father and didn't distribute it equal

My mother is married since 50 years. My nana expired before 2005. However when my mom's brother sold property, she claimed her share through case and won it too. She got her share. we are 4 sisters and a brother. 3 daughters including me are married with 1 brother and 1 sister un married. I am eldest one. She had been promising me of my fair share since last two years, but, when she distributed this, she kept my money with her and said I will give a certain monthly allowance (orally) She took 2 flats (1 for my divorced daughter where she too invested 50% by way of loan, and 1 for younger brother where everything is invested by my mom) My younger ones keeps telling me that it is mom's money and if she decides so she may not give you money as per her will and wish. She is not disclosing anything to mee as to how much she got from the share in the sold land. My father took my 5 signatures on ID proofs. I doubt if she changes her mind I will lose for no reason. I am married and have 2 daughters. My husband is struggling a lot in his business. We have some recordings of the conversation when she initially asked to buy a flat. My question, how come it is her will and wish in the sale proceeds of her ancestral property. This is great injustice. We are passing through terrible times for no faults. Simply because she stays with my divorced sister and unmerried sister, who keep brainwashing her mind and provoking her to not to give me money. Any help is heartily appreciated.