Wife threatening to commit suicide if I file for divorce

Iam from india and working in UAE i am married with 2 minor children since my marriage in 2010 there has been dispute between my wife and my family my wife did not stay in my home much time every time she complains that my family has done mistake hence i called her to stay with me but here also i found her disobedient against me and my family any issues she will relate to my family and fight recently she has crossed all limits and abused my mother and me even she has physical attacks on infront of children shes threating me that if i tell to anyone she will commit suicide and put me in jail also she warns me that she will kill me if i file divorce or get separated from her or if send her back to india i informed to her mother about this behaviour but i found no change,i have also investigate with sisters husband and found that her sister is also does same think as my wife he is also suffering hes residing in london we found no support from her mother also supports her she is teachi