Property and money

Sir My mother in-law has 5 daughters (no sons), last one was married to me. wife, me my son stayed in mother in-law house for last 15 years, because the place was small my daughter stayed with my mother in-laws sister place very near, last 10 years she (my daughter)is in Dubai and fail to send any money to us, instead we have send 6 lac to her(bank proof). My mother in-law self- acquired property was transferred to my wife (single name),and son and daughter were made nominee for the house (287sqf), even money was transferred in my wife account no joint account, here my son is a nominee, now my wife died without making a will. Mother in-law is still living 93 year old, I am 61 years old, And my daughter has come down from Dubai and is harassing for 1/3rd of the house and the money in the bank. she has even send a lawyers notice, I am retired and son is in collage, my son is 9 (years younger to my daughter, because the money was stop from transferring in my sons account and no fund to support, My mother in-law was forced to taken to her elder daughters house reason no lady in our house, Mother in-laws will Is to transfer the property in my sons name. and me as guardian. since my daughter is married to a uk citizen we have no proof. But only photos 1) Mother in-law had inherited money, which was equally divided among the 5 sisters. 2) Mother in-laws share was given to my wife, for taking care of her 3) No will is been made by my mother in-law, neither my wife. 4) Wife’s Hospital bills are pending. Mother in-laws elder daughter is taking care of our needs. 5) Mother in-laws house was a self-acquired property, which presently is in my wife’s name. 6) Mother in-laws Age 93 Myself 62, Daughter 30, Son 21. 7) My wife has nominated my son and daughter for the house.