Domestic voilence

This is a family dispute my father died in 2011 and he not made will. there are 4 family members 1 elder brother and two younger sister and mother. Elder brother behaving very badly with mother and sister making wrong allegations and beating to mother and sister. We put case at domestic violence court and court release order to restricted him to enter at home. Now we are facing trouble for he wants to enter at home as well our case is running at civil court for permission to equal share distribution that we are facing lot of harassments from son and he wants home, we cannot leave with him at one home. mother wants to share equal for 2 daughters and 1 son and mother . 1 home sharing distribute equally to all four. mother is ready to give son share amount to him but she cannot live with son at one home. because he insults every time to mother & sister & beat them and not take any responsibility of home. He wants home only. Sir please guide what we do. Civil case will take many years for decision. We are facing mental harassment at domestic violence. 1) is mother is more right or not than son? 2) is mother cannot take her family decision is son is behaving very badly with family, whether son can live with him or not. 3) Son is unmarried. 4) Son is taking disadvantage of father absence and will made .