Divorce from my wife

Hello to all. I am an Engineer and working for a good company. I had a love marriage in the year 2013. Before that we were into relationship for 7 yrs and everything was going good. But after marriage, things started deteriorating, coz of her parents continuous interferences. And, we landed into quarrels and miss-understandings. I tried to sort out things amicably, but I failed to do so. And, she left home in the year 2018 feb month, for a 15 days work. But till now she have not returned yet, despite my many times asking her to return. In the beginning she kept saying little more work n all.... N days converted to months and than to years. N this is not the first time she did this. Last time also, her dad took her for 15 days and she returned after 2 yrs... Than too when I begged her parents. But now she is not returning and neither giving me the divorce. She is not saying anything, keeping me blank. And, this time I would rather choose giving her divorce than beggingbin front of her family, as I am not wrong. Even a middle person who is her dad's friend and was helping us to sort of problems, knows it. He tried a lot n lot... and, now he also gave up. And, suggested me to get divorced. I just don't know what to do now..... She is not with me from last 1yr 5 months. Here, am looking for some genuine suggestion. Please help me...