Procedure for claiming over paternal property

Person A had 4 Sons and 2 Daughters. Among 4 Sons, 2 Sons died and 2 Sons are alive in which 1 Son is married [His family : Wife and a Son], another 1 Son is married [His family : Divorced and staying alone]. Person A made a will that after his death the property will be divided equally among his all children. Person A died but now they are not disclosing the will of their father because their 2 brothers died and they don't want to disclose the will of their father to the wife's of their 2 died brothers. Now, among the 2 Daughters, i Daughter is married [Her Family : Husband and 2 Daughters], another 1 Daughter [His Family : Unmarried]. Point 1 : Can the wife claim about the share of her died husband? Point 2 : Does the Eldest Grandson as per the Indian Law has the possibility of claiming his Grandfather's property?