Missing spouse

I got married with a woman who is Brazil passport holder living in UK about 6 and a half years ago. But she stayed with me only a week after obtaining marriage certificate and left ever since then. We never lived together as a proper married couple usually do. But I still believed she would come to India and live with me one day. However she never visiter me. Meanwhile it seem she moved and her address changed. After 6 and a half years of this marriage, I decided to file a divorce because I now found a person whom I really want to share my rest of life. I came to know her original address is no more when I tried to send a divorce notice through a court in India. I tried any way to find her address and current location, but all my effort failed. Now, my judge finally admitted me to post a public notice in newspapers in UK by the concerned embassy request. Now, I want to know how long do I have to wait if she would show up after posting the notice? If she doesn't show up, how long does it take for my divorce to be approved by the court? Please kindly guide me.