Unmarried Female Hindus Intestate Property Rights

I am Hindu Female, My Aunt(Mothers sister) is unmarried, She gifted her property to her 2nd Brother through a conditional Gift Settlement to enjoy life estate only to him, and to his heirs, if he is issueless the property returns to her and to his heirs with the same conditions in 1932. The 2nd Brother died in 1969, and her wife died In 2001, issueless. At the time of 2nd Brothers death, My Aunt, My Mother and her 1st Brother was alive.(AUNT DIED IN 1971, 1ST BROTHER DIED IN 1984, My Mother died in 1991) I am the one and only daughter (Adoptive) to my Mother. And her 1st Brother having 2 Sons namely A and B.(I am the natural daughter to this 1st Brother, but i have been adopted by my 2nd Aunt, he has no issues) Now kindly clarify the following points: 1. After the Death of 1st Brother in 1969, Is property returns to my Aunt, as per the G.S. condition or not, because, his wife was alive till 2001. If the Property returns to my Aunt in 1969, Who will be the legal heirs to her. As per custom if Hindu Female dies unmarried and intestate, the property devolves to her sister alone only? or to be shared by surviving sister and brother? (100% or 50:50) 2. If Property returns to my Aunt, after the death of her 2nd brothers wife in 2001, who will be the legal heirs to her, and what is the ratio? Sisters Daughter(Myself) or 1st Brothers sons A and B. Or All of us.(100% or 33% each) 3. Till date the property is undivided, I am alive, A and B died. A having 4M and 1F issues, and B having 3M and 2F issues. Now what is our shares. (100% or 33% each for me and to A and B or in 11 parts) 4. If we go for partition today, on which of the above point base we have to divide the property and what will be my share. Kindly Guide Me.