Statement of accounts from Administrator of estate to the heirs as required by law

Hello .. gm .. letter of administration was granted to my eldest sibling in 1990 by mumbai high court. For my father’s estate no will was presented. All stocks and immovable property including lease of land and rental home was transferred in her name . Annexure was recently applied for some remaining stock still in my fathers name as a requirement for transfer. She has never given any statement of account. I am the youngest and was in medical college at the time of his death. Last year after a broker informed me of the details of her demat transfer in her name ,my second sibling wanted to transfer a random sum as a settlement . My legal notice by lawyer was not received by them . I have signed all documents as per requirement to get the remaining stocks also transferred to her as the administrator. Some stocks were then transferred in my demat account. They are unapproachable and hostile and hold all the originals. Is it possible to force them to come to the table and give the details of account and what has been done to his estate and distribute amicably between the three heirs? The annexure was received this year . Do I have any rights and can I pursue this ?