Hi LIB,
The jurisdiction will be the place where the alleged crime has taken place. If you wife has mentioned in FIR that the place of crime is where she is currently residing (i am assuming its her parents house), then it will be the place of jurisdiction. Here is an excerpt from honourable SC judgement:
Section 177 : ORDINARY PLACE OF INQUIRY AND TRIAL: Every offence shall ordinarily be inquired into and tried by a Court within whose local jurisdiction it was committed."
Sections 177 to 186 deal with venue and place of trial. Section 177 reiterates the well-established common law rule referred to in Halsbury's Laws of England (Vol. IX para 83) that the proper and ordinary venue for the trial of a crime is the area of jurisdiction in which, on the evidence, the facts occur and which alleged to constitute the crime. There are several exceptions to this general rule and some of them are indicated in Section 178 of the Code which read as follows:
"Section 178 PLACE OF INQUIRY OR TRIAL
(a) When it is uncertain in which of several local areas an offence was committed, or
(b) where an offence is committed partly in one local area and partly in another, or
(c) where an offence is continuing one, and continues to be committed in more local areas than one, or
(d) where it consists of several acts done in different local areas, it may be inquired into or tried by a Court having jurisdiction over any of such local areas."
You can also check the following judgements:
delhi-hc-Niraj Trivedi Vs. State of bihar_Jan 2008
delhi-hc-jurisdictionexplanation-oct-2007
delhi-hc-Bimla Rawal Vs. State-jurisdiction-Jan-2008
Preeti_Gupta_&_Anr._Vs._State_Of_Jharkhand_&_Anr._on_13_August,_2010
Sunita_Kumari_Kashyap_Vs._State_Of_Bihar_And_Anr._on_11_April,_2011
Secondly, your wife wriring a threatening email to you will weaken your wife's case .