Lost and exausted

My wife has gone to her house 7 months befor saying her dadi is not well and now she is not coming back. Ever since our marriage happened in march 2016 she has been visiting her house every 2-3 months and stays there fkr 2 months. We have a girl child also who is now 1.5 year old and she has taken my child also with her and i m dying without them.Every now and then she blames me for different thing. She does not like my parents and has a very negative thought about them This time she says she will come back only after i construct a differet floor where i and she can only live. I have started the construction also and 60% completed. In these 7 months i have visited her house 3 times and told her to come back as i do not feel good without them and my child but she again again disrespected me and has not come. From starting day she fight with me on different topics. She wants her everything seperate like separate inverter flat and everything and she does not like to talk with my parents and does not respect them also. Since its been 7 months now i want to take a legal action against my wife. If she doesnot want to live with me its fine for me but i dont want to guve any maintenence to her. What should i do pls advice me.