Wife left home and is staying with her mother for past 6months and refuses to give divorce.

Hi, On a day, after her office, my wife went to her mother's home and messaged me that she will be returning after 4-5 days. When my father called her asking what happen she said, won't want to return our home. Nothing wrong happened in our home for her to take such decision. After 2 days her uncle and brother visited our home to talk and we said, Its upto her decision if she wants to continue marriage. Two days later we got her uncle's call saying, my wife and mother wish to annul the marriage. Also, they visited a lawyer and informed us that we will file a mutual consent divorce after completion of an year from marriage date. As discussed in past, when we initiated to call my wife's parent's for filing the mutual divorce after the period they're refusing it. She wants to continue marriage but demand's I should leave my parents. They also visited our relatives place and tried to threaten us for legal actions if we don't do as they say. Now, I wan't divorce and I can't leave my parents. How shall we proceed to file a divorce in such case and on which base?