Gaurang, in my view...your wife has made a grave allegation on you and she has made up her mind to take divorce from you. So be clear even if you don't want to give her divorce, the court CANNOT force her to come back to you .. even if you succeed in proving her allegations wrong !!!!
Your wife is interested in HEFTY ALIMONY hence she is using all the weapons available under the women laws to harass you so that you give her money n thus DIVORCE. You evaluate the situation as to what is the money she is asking for and if you can afford to pay her...as litigation will consume 3-6yrs of your life.
Secondly if your income is less and aslo if ur wife is working , then you inform the court that ur ready for divorce. Ask the court to mediate and help you settle the matter, however do not accept the allegations. Your wife will eventually reduce her demand as she will also get frustrated with time.
The point that im trying to make is do not waste ur time on expecting ur wife to come back....unless u have also decided to give her a taste of her own medicine by rejecting her demand for divorce !!