Brother not willing to share the property

I am younger brother's wife we live in USA and my brotherinlaw kept house that was in my father-inlaw name and never wrote this property to anyone's name so does my mother-in-law both of them no more. After few discussions still my brother in law never came to a compromise and wants all the property to himself and his wife they hve no children. We have 2 daughters who only heirs in that family. My husband did not sign also he is soft do not fight for his rights. What should I do in this case