How to claim right in mother's property

I am still living in the house of my mother in law. This house was gifted to my sister in law's girl by my mother-in-law. My brother-in-law had done a case of citing his mother's mental condition and this house was heritage. The case has also been done for declaring heritage property.At present the gift has been canceled.And this house has come again in the name of my mother-in-law. Now, my brother-in-law is making a power of attorney in his name. My wife also wants shares in this house, but they do not want to give it. If we do the case then what will we get the shares? Or can we get them out of this house? I have deposited the electricity bill online for four years.