mr.pc,
her alligations is the base of your evidence.
As an example -"tried to kill her by trying to throw her out of second floor window". The normal question here is - who saved her from throwing her out of second floor. your lawyer will ask her 'who saved?' suppose she tell a name. 2nd question is 'on which date, at what time?' she told - a date and time. 3rd question in which room, how many doors and windows are there?' she answered. now call him through court, that person who saved your wife. in his witness suppose he say 'yes, i saved her' next question to him ' at what date and time' he told a date and time. but it is not matching with your wife's date and time,then it easily understood your wife tell lie at her evidence. after getting charge sheet you will easily understand, what to ask?
actually it is job of a learned advocate. your adv will cross her and her advocate will cross you. all will be recorded by the court clerk under the supervision of the judge. do not worry, engage a reputed criminal advocate for this purpose.