@Rohit
You post shows two sides of the story. On one hand the woman says she will commit suicide and on another hand she says she will put dowry case. How can it be possible for a woman who don't know you to put a dowry case or commit suicide? And I do not understand how you could be implicated in that case anyway?
As my intellect urges, it seems this woman is either your wife or may be your girl-friend. If such being the case, there must be emails and sms from your side also which is stopping you to lodge a complaint!!
Pls clarify if I'm write. May be if this is the case we can guide to take remedy in other legal ways.
Else, your post has already been answered.
//peace
/Saurabh..V