Hi Vishal ,
1) Completely agree with Saravanan Sir . Please file a complaint against her in Police station and manage the Police so that they don't reveal the complaint to your wife now . You know what i mean.
2) I can forsee 498 A , 34 IPC and Section 4 Dowry prohibiton Acts being filed on you in future looking at your wife's and in laws statements and hence the police complaint would be of real help to you at that time and later when you file the case .
3) Remember she is staying with you now and hence in all probability she will file a case which will be on all your family members .
4) Keep recording all her statements wherever possible and keep it handy.
5 ) Keep tab on her and on her travels so that you can get a clue if possible whenever she files such cases .
6) You will have to apply for Prearrest bail ( Anticipatory bail ) when such cases are filed and abscond during that period .
Do follow the above and i can assure you your troubles will be less . You know your wife better and hence you are also a better judge about the timing when you need to file Police complaint . Trust me if you delay even though knowing your wife well then it will not only be you but your family will be in trouble .
I am personally facing this hence advising you . Rest i leave it with you .