Property

My wife's father expired an year back. The family comprises of my widowed mother in law, my wife, three younger brothers. All married, Hindu family. In father's self earned property : what share will she get? If she is not a part of legal hire certificate, what happens? It's it possible for her mother's and brothers to keep her away from being part of legal hire OR can she opt to keep away from it? Reason being: mother and four brothers wish to transfer my father in law's entire property to my mother in law's name! Is that safe keeping in view that the family equations are not on sweet side? Can my mother in law, in case gets property transferred to her name, simply pass it by will or by sale or gift or liquidated amounts to brothers and keep my wife away from getting any thing? Please advise