Property Transfer

You all gets equal share of ur deceased father's property.. your mother's share, she can gift it to her daughter.. but if she dies intestate then that share will equally devolve amoung you & ur siblings.

Get stay order from Civil Court by filing Civil Suit

in this case your mother cannot transfer so you, your mother and sister everyone has equal rights, it is better you get your name entered in revenue records so that they may not transfer it by indulging in fraud etc.