We married about 3 years back and it was an arrange marriage. My wife's behavior has always been very cruel and threatening since the beginning of our marriage as she had a concern on me taking care of my sibling's education (2 brothers and youngest sister(17 years), all of them being student of University of Delhi, dependent on me and staying with me) and dependent parent's (living in a far village) livelihood and spending a good money on all of us. Ever since the beginning, she started pressurizing me to get separate from my extended family and handing over all my salary to her. Its about 9 months (August 2011) when I relocated to a distant city on account of change of job and my wife continued living with my siblings. After 3 months (November 2011), she took away all her ornaments and some money and went to her parental home on the pretext of attending a relative's marriage ceremony and since then she did not come back. I tried to convince her and bring her back but she never wished to return and on one odd day her brother called me on phone and told that about their final decision of divorce (either force or mutual) asking me money and also threatened me of trapping all of us in a dowry case. I have recording of this conversation. As I am the only earning member of my family and I wished for an integrated family, there were already irrevocable differences developed between us thereof so I myself filled a divorce petition on the ground of cruelity(Feb 2011). Now all of sudden (on 13 May 2011) she, along with her parents and brother, has come to the place where we last stayed together and my siblings are residing nowadays. She, along with all accompanied, started quarreling, abusing and threatening us of dire consequences and by harming herself and trapping us in false criminal cases. Soon after 2hours, her parents and brother left leaving her with us, since then, she has been torturing all of us and constantly asking for huge money (5 lakhs and more).
Coincidentally, I am also present here on vacation and university exams of my brothers and sister are going on. She even tried to dramatically commit suicide and and horrified us so I approached nearby PS but was not entertained so I have submitted an application (14 May) for registering a case to SSP office.
Now my most immediate problems are-
1) This all is adversely impacting the ongoing exams of by siblings, and
2) I have to travel back at work immediately as being the sole earning member of my family, I cannot afford loosing my job.
Please advise asap and help me overcome this??