My wife and in-laws threatening me

I'm a salaried individual. Its been 3 years completed of my marriage. I live in Mumbai and my parents often come here for treatment but my wife always misbehave with them i.e. for food, for TV, for washing machine etc. This time in the month of Jan 18, her similar behaviour continues. This time younger brother n cousin brother also come mumbai alongwith my parents. From the first day when they all come here, my wife used to misbehave with them, insult them. One day my brother got angry and both (my wife and brother) said abusive words to each other (i was in office). My mother intervened and prevent any physical harm to my wife infact, my mother slapped my brother to stop and my mother was injured by her bangles. My wife called me and told me harsh language and abuse my mother on phone and told me come urgently home. Then my wife took my child and went to Police station and lodged a complaint (not FIR). When i was in between my home from Office, my wife's father called me and said that "we'll trap you in Dowry case and you people will beg in our feet" Now i'm sending my parents and brothers home, she staying back with me. But i wnt to end this, may be divorce or anything. What can i do please suggest ?? My wife is telling "let me also go asap". Now she keeps me telling insulting words that all is because of you and threatening me that i will call my father and brother.