Whilst it is true that there are several judgements which state that an working woman cannot sit idle to harass her husband, it is pertinent to consider if what she is earning is sufficient for her day-to-day maintenance. For that, consideration has to be had to the status of the parties, their standard of living, the number of dependents etc.
Wife has to come to Court with clean hands. Has she not mentioned if and how much she is earning? If she hasnt, you can bring the details to the knowledge of the Court to prejudice the mind of the Court against your wife.