@shaantak
Not only it is a sign of her going to fallor shaan.,there are some more things to it.Like she is from a village where they value marriages a lot.,and she is asked to give up that right.,and she has to go back and start an uncertain unpleasant future where she would be neither a widow nor a married one but a divorcee.
And you know how they would react in most villages to a divorcee.And added to that those DLs(dhulwadi leeches of mangal,hetal)they would pester her for money.
In khandelwals' house though she was not liked by all did not have such troubles.So that pain of the forcoming dark future also reflected in her eyes.I guess.
so it is not only leaving shaan but so many things