False DV, Dowry, maintenance

I and my wife are both b.tech. Her parent are financially sound, father has shop and mother is govt retired class A officer. My father is govt retire class 2 and mother is uneducated. I and my wife was working in same company. Her work attitude was not good and not paying heed towards work, so office gave her notice to improve performance but she fails and then they requested her to resign from job. While she was working she was drawing approx 25 k. I am drawing around 60-65 k in hand. It's around 15 months of our marriage. She is quarreling after first day of our marriage. My wife is very short tempered, stubborn and use abusive language. Her mother was deeply involved in our married life. I went for pre-litigation mediation because of these things just after 6 month of our marriage and on mediation interim order we started living together for around 6 months. In this 6 months I thought she would change but this was not happened and one day she quarrelled and filed DV, Dowry and maintenance cases against me and involved my family members also in the same. Please suggest, what should I do? What should be the maintenance amount that court can award her?