How can I save my self acquired property

I am a retired person. Have one wife and 2 married sons, my first son is dead. My first daughter in law is not in good terms with family, she has a son( minor). My second son and his daughter in law are in good relations with us. I want give my first daughter in Law's share in ancestral property. My query is. 1) can my first daughter in law file a civil suit on my entire property ( ancestral + self acquired), if self acquired property is included than how much time it might take in court to get clearance. 2) is there any way to safe guard my self acquired asset.( Transferring my asset to