Mr. Aman Batra,
ALaw is not meant for uncertain things or expectations. Events come first and law takes care of only after that depending upon the nature and characteristics of the event.
Moreoever, armament for any enemy attack is that, which may work at the time of need after seeing the nature of the arm used and its direction
If your wife changed her contact number, forget her for the time being, wait and watch for her future course of action.
If you do somthing in advance, everything becomes challengeable and can be termed as intentional, which may be easily proved against you as you would have made things easy with advanced actions for the opposite party to think on crashing your though perception.
Even otherwise also, how you are sure that any other person would not deceive you after transfer of property by you to anyone?
By the way, when you talk about will, do you think 498A or DV cases can kill you and also if will can remain unchallengeable even after your death. Even otherwise, there is no harm, if you want to transfer your property to your parents or any sibling in any legal way you like even without haqving concern with the expected cases of 498A/DV.
So, if there is any truth in your story, wait and watch carefully and cautiously will be the best option for you.