Dipen is father of Ashwin and grandfather of Mittal.
So, Ashwin is father of Mittal.
Thus. Dipen and Ashwin are the two fathers.
Komal is the sister of Mittal.
So, Komal is the daughter of Ashwin.
Since there is only one mother, it is evident that Esha is the wife of Ashwin and hence the mother of Komal and Mittal.
So, Kiran is brother of Ashwin.
Clearly, Ashwin is Esha's Husband.
So, Answer is Esha.