I want divorce but my wife don't

Hi, I got marriage 2 years ago. after 2-3 months we don't have that much understanding.. Her intention was and now also that I will break my relations to my family and other relatives. We have 1 nine months baby as well. I did everything for her during pregnancy period but she and her sister (my brother's wife) and her mother fought me and my mother and abuses both of us and after that incident she and her family shows the different face and now situation are that I can not survive with her. To make my decision peacefully I came to Bangalore to think from free mind and decided that I can not live with her, on the other hand she went to her home town and after 4 months her brother drops her to my home town in situations like my father is not able to stand from bed due to weakness, In this situation she forcefully living at my home without considering the position of my father. What should I do I can not live with her for even a second in the situation she and her sister created ? Please assist me is there any chance to get free from marriage if yes please tell me the path for that..