I maaried about 20 yrs back . But we have disputes from starting . We don't have any child. My wife

I maaried about 20 yrs back . But we have disputes from starting . We don't have any child. My wife has put false allegations in court against my family. Now i am in delhi and she is residing in u.p my village house. She and her father is in greed of my property. My father died 4 yrs back intestate. Property is divided into 3 parts(1 me + 1 brother + 1 mother). I made relinquishment deed in favour of my mother and she made will in favour of brother's son. Is property safe or she can claim over property?