Muniya - here was my take on the movie.
How unfair / hurtful was Nandani’s behavior it to the guy that she got married to? and his family.
If she married him due to obligations to her a parents then why not HOLD those obligations.
I give this advice to my cousins as well - if you feel you parents CAN and WILL make the best decsions for you - then uphold that belief. Don’t whine when things don’t go according to your choice because you didn’t voice your opinion. Either you were not mature or were a chicken.
Lets reverse the roles - imagine if a guy did that to a girl - he would definatley be a DAWG right.
I think there is a chance of the husband to be downright not understanding and resentful if that behavior took place in real life - even if she eventually didn’t leave him. (not jetting away to some foreign land to reunite his wife with her lover 
If Nadani’s character had concerns she should have voiced those opinions or convinced her parents or family. Not get someone else and their family involved to resolve the matter.
my 2 cents