Divorce

I got marriage on 16.05.2015, after 15 days of marriage she got pregnant for 54 days, after enquiry that was her brother in law's so ma parents was not agreed to stay with us but I understood my parents that all girl is same type if I will marry other one she will not be this type what is the guarantee, and with the advice of advocate we made one agreement that she will forget her old relation and as my sweet will she will do forever. Now her family with her brother in law is good so I am telling I don't want any link with ur family but she is always linking with them and don't caring to me as she was a semi state govt teacher, she earns 6500 per month and I am a railway employee my monthly income is 30000. What I will do if I want divorce because now she doesn't want to go my home as she is a teacher and she is staying near her school rented and telling me to come her, she also doesn't want to take care my parents and my grandmother aged 60, 62 and 90 so please give me the suggestion what I will do she is in orissa and I am in Karnataka there is no one to take care my parents, as my old age grandmother I am not able to take them with me sir please give suggestion