legal heirs of the ownership property

My friend had expired in 1991.He had wife ,two daughters and one son.The daughters and son are married.My friend was living with his family in a rental house and was paying rent with due receipt from landlord.After his demise his wife started to pay the rent and got the receipts in her own name by the landlord.In 2012 her son died and his wife got remarried in 2014.Unfortunately she took a divorce and staying in someone's home on cot basis.My friend,s wife left the rental house without giving possession to the landlord and kept the house locked for 3 years.The landlord sent a legal notice asking her to vacate the house ,but she did not give possession.The matter went in court of law and ran for 6 years.Then the landlord and she made a compromise and in that compromise landlord to give flat on ownership basis .The landlord also agreed to convey this to promoter ,so he can make new agreement to friend's wife.The wife given consent to vacate the house after agreement is made between her and promoter.But she stated in compromise that if she died in the meantime,the entire process will be done by one of her grandson and same ownership property will belong to him after her demise.Now my questions are as follows
1)Is she entitled to get entire ownership property in her name
because she was the wife of my friend?
2)Do the married daughters get the equal right like their mother in the property?



3)If her one daughter is absconding for 16 years then can son and daughter get right in the property?
4)Can the wife of the friend transfer the entire ownership property to her grandson without considering the rights of other grandson and daughter
5)Can she become the owner of entire ownership flat or will get only 1/3 portion because she also has one daughter and other absconded daughter and her two adult children
.Please answer me.