Did daughters leagal rights

My mother has died in the year 2015 my mothers father died in 1994 from first wife he had 2 daughters my mother and her sister after death of first wife he married second wife with her he had 4 sons 1 daughter my grandfather is not a nice man told by grand mother to her brothers when she was about to die asked her brother to care them conduct marraige and they did has told by sister.after her death meanwhile my grandfather married second wife my grandfather own 30 acres land which was ancesrral the elder son died with covid in 2021 they have entered 30 acre land in there names without metes and bounds in 2008 and the property is still there in there names my question is can ask my mothers share 1/7 do I have chance to claiam my mother share they told it is still in her father name only they will give 3 acres land 2 both sister since out 30 acres land 3 acres land bought by my grand mothers gold jewelry now sir what is the chance they are not giving anything came to know they are planning to sell properties.