(1) how much time it will take to get the case finished in court. What are the options left for petetioner wife in court ,
TIME FRAME CANNOT BE ISSUED WITH CERTAINTY IN COURTS.
In criminal matters, usually we say it might not go beyond 2 or 3 years, but I have seen cases where appeal has pulled on and the Original Complaint itself took quite some time, since summons, police version, leading the C.E. ( Cross Examination ) of the witness,...etc pulled on.
In civil matters, it has become a standard practise for advocates to say it might get over in one year or even thirteen to twenty years ( few cases are going on for twenty years ).
Options for her are that she can plead NOT GUILTY.
Then the witnesses, the prosecution evidence, reports, police version,...etc on your side have to be strong enough to make it a water-tight case.
Or else, she plainly gets acquitted.
Yes, you can appeal even if she is punished for a term with/without penalty and if you want more to be given out as punishment, but whether that would sustain itself and on what basis, is a matter to be seen in the court.
You need to have a serious word with the Public Prosecutor.
But before that, meet a good criminal lawyer to find out ways to SEAL HER EXIT.
(2) If wife prefers to go for complaint case will it be the same case in which the FR by police was put or this complaint case be the different case from this case in which FR by police is put.
You cannot club two FIRs.
But the charges within one FIR can be more than one charge.
If police has filed an FIR pertaining to one case, your wife has to fight that out.
If she intends to file a COUNTER-CASE, that will be a different FIR ( if the police inspector agrees to filing of an FIR ) and you will then have to fight it out.
(3) Will this FR by police be sufficient enough to take Divorce on grounds of cruelty as mentioned in the judgement of Supreme court in case of K Srinivas vs K Sunita in which it is mentioned by the Apex court that "the Respondent-Wife had filed a false criminal complaint, and even one such complaint is sufficient to constitute matrimonial cruelty" (judgement dated. 19-november-2014).
Yes, It is strong ground for divorce, but not until a criminal court delivers it's verdict. In that if she is acquitted, then your citing that as the reason for seeking divorce, might not be a strong reason, but is definitely a reason that you can give, whether the court accepts it or not.
You must strongly argue the point of defamation and mental agony and stress caused to you.