Possible right in ancestral property for daugther

As per the information I have , the property is said to be ancestral and my grandfather didn't make a will before his death. My grandfather had 3 legitimate son and 1 illegitimate son & 1 illegitimate daughter. Due absence of will, property's major share was given to illegitimates(3/4th) and legitimates (1/4)th and this was initiated by my father(legitimates) and his paternal uncle. In my grandfather's 3 legitimate sons, is my uncle-1st, my uncle 2nd & my father. My 1st uncle is no more and his share in property was given decade ago. But my father & 2nd uncle share of property is undivided. Now my father is initiating to sell his part of property let say 90acres of land. My father have 9 kids(8 sons & only daughter(& that me). 1.Do I(daughter) have rights in this 90acres ? if yes, Father is not willing to give my share(only daughter) but doing fake promise of giving my share(in form of sold amount of property )once the 90acer is sold and is demanding me to sign some property legal papers relating to 90 agriculture acres so that he can transfer it all to his 8 sons. 2.What possible step to take? 3.Can I ensure my share's safety after signing those document? 4. Can I get my share after the sale of property in form of money? Should procure anything in writing from my father to ensure my safety before signing documents so as it has bearing after the sale to secure my share? Guide me I in this accord......