Transfer of shares after death

Dear Sir, my mother and I purchased a flat. The agreement and share certificate has our names as (1) mothers name (first name) (2) my name (second name) That is, we are joint owners (50% each). During her life time, my mother filled the nomination form mentioning that upon her death, her 50% should be transferred to me, and I should be 100% owner of the flat. The managing committee accepted the nomination and approved it, and made all necessary entries in the nomination register. Recently my mother passed away, and I applied for transfer of shares along with death certificate of my mother, xerox copy of approved Nomination received by society, application for membership form duly filled, with 2 cheques of Rs100 and Rs500, original share certificate, indemnity bond. The managing committee recently called for annual general body meeting. They have mentioned some flats that were sold for transfer in the agenda , but have not kept my flat for transfer in the agenda of the annual general body meeting. They are saying that there is no need to take approval for transfer in the annual general body meeting and they can do the transfer in the managing committee meeting. Also, they are saying that the annual general meeting that will be held in September 2019 will be held for the previous financial year(2018-2019), and my mother's death has occurred in the current financial year(2019-2020), therefore, if necessary, they may keep my flat for transfer for the next AGM which will happen in September 2020(financial year 2020-2021). My queries... 1) Is there any law which says that if a death occurs in the current financial year, then the flat cannot be transferred in the current financial year and should be transferred to the nominee in the next financial year? 2) In case of death of a member, can the managing committee transfer the flat to the nominee in the managing committee meeting and not inform the general body meeting? 3) or as in my case, after the death of the first owner, is it mandatory to transfer the flat only after the approval of the annual general body meeting? I have a sister who is not interested in the property. Please guide me. As I have doubts that the managing committee is deliberately delaying my transfer. Regards