Divorce from My wife

Dears, I got married around 3 and half years back in my hometown in rajasthan and stayed 1 month with my wife, in which also she behaved to cruely and i was broken both mentally and physically, then i called my wife here in saudi arabia and she didnt change in her behaviour anything and she started behaving too bad with me and tried to do suicide a lot of times, I have been living in the Saudi arabia as a NRI and got married with my wife around 3 to 4 years back and we have a son, My wife have done a lot of cruelity and tried to do suicide a lot of times and made my life troblesome during the time we stayed together here in Saudi arabia , and now since she is in india she is making my reputation in the society go down by giving wrong image of mine in front of the society, I want to take divorce from her but she is not agreeing and my mother also is forcing to keep her but i am tired of this relationship, Kindly advice what should i do since i have been dieing from day one in this relationship and lost a lot of money and respect and disturbed personally, I want to take divorce kindly advice me in the best way, Thanks and regards,