All Praise is to Allah(Swt) peace be upon the messenger of Allah.
Sallam,
Brother this question is very important to me.I had been married 12 years ,Living separately next to my father's house.My younger sister who is unmarried and who is 10 years younger to me has beaten my wife, in my absence,with out any fault of her,this is the first insistence.When I came home I learn form my children about this, my wife did not told me, has she was in a stage of shock ,and was severing and had fever.When I informed my father who is the head of our family .But he took the side of his daughter, I requested my father that she should apologizes to my wife.But to my surprise my father ordered me not to set foot in his house again.
My other sister who was in the house at the time when my younger sister had beaten my wife and she was the one who rescued her informed me that my wife did not do any thing wrong to offance my younger sister,but my younger sister beat her without any reason.My father never does justice in the house he always takes the side of his daughters.He has divided all his wealth i.e cash of seventy five lakhs and all is property only to his daughters. He has 3 sons and 3 daughters.My mother passed away 4 years ago.from the time my sisters have received the money from my father, all this actions have started. It has been 3 days i am not with talking terms my father.I have even forgiven his my share to which he has done injustice. I am thinking of selling my house from the area and settle some where else. Me and my wife fear Allah(Swt) we doent even watch T.V .We pray to Allah(Swt) to give hedia to Us My father my sisters and all my muslims brothers and sisters to do justice( Adal ).We know only Allah(Swt) can change hearts.therefor we pray.But before taking any decision I wanted to know whether It will be wrong to sell my house and settle somewhere else,My wife is against it.Pl.answer May Allah(Swt) reward you.

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.

It is permissible for you to move to a far accommodation from the dwelling of your family as a way to keep away from problems. In any case, you are obliged to be kind and dutiful to your father, and if he mistreats you, you are not permitted to mistreat him or desert him and the like. Among the rights of the father is to be kind to him even if he is not good, as we clarified in Fataawa 87019 and 85652.

Moreover, you are obliged to keep ties with your brothers and sisters including your sister who hit your wife, because keeping ties with kinship is an obligation whether or not your blood relatives keep ties with you. The Prophet said: "The person who keeps ties with his kinship is not the one who does so when they keep ties with him; rather, such a person is he who when his kinship severe ties with him, he keeps ties with them.” [Al-Bukhari]

What we mentioned about the permissibility of moving far from your family is the principle; however, if you fear that the problems would increase because of that, then it might be better to stay close to them while being patient with their harm. In which case, you and your wife should be wise while dealing with them hoping that Allaah will rectify their matter. Allaah Says (what means): {Repel (the evil) with one which is better (i.e. Allaah ordered the faithful believers to be patient at the time of anger, and to excuse those who treat them badly), then verily, he, between whom and you there was enmity, (will become) as though he was a close friend.}[Quran 41:34]  

As regards your sister hitting your wife, if this was without a sound reason, like repelling aggression for instance, then this is an injustice from her side to your wife, so she is obliged to repent to Allaah and to ask your wife to forgive her for that.

In regard to what you mentioned in regard to your father distributing his wealth to your sisters, if the situation is truly as you mentioned, then your father did what he is not religiously permitted to do. According to the most preponderant opinion of the scholars a father is obliged to be just between his children when gifting them as clarified in Fataawa 119032 and 81796.

However, you did well by renouncing your share from this wealth and forgiving your father in this regard.