Replying your query... I must submit that Under Indian Law, no divoce case is entertained in court of law before completion of one year from the date of marriage unless and until the marriage has been solemnized wholly on fraud or misrepresentation. So if you make allegations such as characterless or etc against your wife, it will be ground for her to get decree of divorce from you and when you don't have fool proof evidence, you cannot knock the door of court of law and demand decree of divorce.
So I opinion is that, kindly bear with it and what Roshini has advised you... you should act on her advise and try to sort out the issues with your wife as soon as possibe because 3 1/2 months are too less to understand a human being and give her a chance, so that she can adjust with you. Hop you cooperate with her.