At the age of 8yrs my mother expired and I had a younger sister.My father got second marriage and my step mother had a daughter.My 2 sisters and myself settled individually with our families.My father purchased a land of 90 sq yards and built a 2 storied building with my financial support and kept whole property in the name of my step mother.Now they want to sell the building to clear their financial problems and they are also giving share to both the sisters.They denied to give any share to me and since property is on her name she says all rights are there with her and my father is also totally supporting her.Since my step mother's brother married my own sister she is giving share to her and also to her own daughter.I have 2 children and doesn't have any property on own.Please advise me what to do to get my share in that house.