@author,
Forget about getting divorce now, the sooner you want, the longer it will take.
1) IF you can save your marriage try to do so. You try to 'manage' your wife (I didnt use the word 'control' because there are many idiots who may take objection to it :) Try to make it better for both you and your wife. It seems your wife is misled and misguided by her parents/her upbringing. You know the situation best and you are the best judge. I know a few guys who have successfully saved their marriage from such MILs. But this will need your wife's cooperation.
2) IF NOT - if you are so sure you cant live - then first try to minimize the damage. Live separately (from your parents) or live separately from your wife. Wait for 1 year period to get over. Do not talk about Divorce with your wife till then. Once your wife realizes that your marriage is DEAD, she may herself ask you for divorce. If she has a BF or someone else, you collect evidences. As per your posts, I couldnt see any strong Cruelty factor to claim divorce.
Many people like to play these kind of games - they are very quiet and cooperative before marriage, but they have a hidden agenda in their mind. Once you get married they start dictating and try to dominate. Typical Indian Soap Opera. Unfortunately you got sucked into it. Fortunately, you can still fight it.
3) I don't know what kind of warning your MIL gave, but if she referred to you AND your family members, it is obvious she is hinting at filing dowry case against you. Just read about 498a first, and in future you may be able to laugh on your MIL's face.There is more than enough info on this portal
4) Many will suggest that you succumb to the pressure tactics of your wife, just to save the trauma of false dowry cases. I (and many more here) dont support that. If you dont cooperate with your wife and your MIL is adamant, sooner or later your MIL will start talking about 498a. Until then, you need to WAIT.