Wife is giving mental torture

What is the reason she acting like that ? Do you taken her to hospital? Explain all to your Father inlaw  and convence her to take treatment if need ..

Record every thing it may be useful in future if they file any complaint

Understanding issue, Whatever good things I say or my mother say she will take as negative. She didn't give respect to my mom and me, She uses abusing language. her parent home is nearby to my home, after marriage everyday she was going to her mom home. She will not cook often she will bring food from her mom home and will serve only to me and my son, she doesn't care about my mother. My mother has so many health issues, BP, Breathing problem etc.. .my mother herself cooking food for her. Problem is whatever we say that she takes as negative. She is not thinking this is her family. She cares only her mom family. Whenever quarrelled happens Her parents supporting her without anything discussing who is right or who is wrong. Due to this I didn't like my mother in law and father in law. My wife does not like my sister also. My sister was hospitalized for poison consumption few months back. But we didn't give any complaint we have all the hospital records..

U are standing at a place now where u have to decide which road u need to take in your life.
1 - Leave her and start a new journey with someone els.
2 - Live with her with all the flaws by making correction , adjustment and sacrifice with ur life and coming days in a hope that one day all will be fine.

both the option has different solution. Think and take a concrete decision on which road u wish to walk.Once u choose the road, ur problem will be solved quickly.