I am not agree for mutual divorce

Sir, I am a man of 51 years staying Vadodara city of Gujarat State. My wife is of 46 years Old. We are having a girl child of 20 years studying in B.Sc degree course. Recently we had some mis understanding in our life due to which she is seeking mutual divorce from me. Looking to the good future of my girl child I am not agree with her and I requested her to forget all the things and would like to lead a better life. I am a state government employee and my wife is working in a pvt school as a teacher. Her monthly salary is approx. Rs.15,000/- p.m. We are living in a rented house since last two years and I was very particular in paying the rent and other dues to the owner. Now my wife says I don't want any compensation from you and you just leave me, I don't want you. I don't see any particular reason for this behaviour of my wife. Recently, she has met an advocate in the city and drafted a divorce petition and asked me to sign. But I throughly denied to sign on the same. Sir, Can you please advise me what to do in the matter? If I am not signing the divorce petition what action can be taken on me ?