sale deeds because of mismatch of sign

I buyed 2 plots in my name  name like ponam rekha w/o ponam suresh.
my sur name is ponam.my wife ponam rekha had sold 1 plot where she signed like "p rekha"
we are not divorsed
she changed her name to her father surname =madadi .In adhar card like "madadi rekha"
now she sold another plot bought by me in her name by signing like "madadi rekha"

Now she expired 2  months back.

Query:Can we cancel the sale deeds because of this mismatch of signs

Why you want to cheat people on your dead wife's name. You are dishonest. if she sold her plots why are you worried. You greedy fellow. File suit and spend whatever you have earned so far and burn your peace and energy,,,

Its my heard earn money