@blue: Exactly. I agree 101%.
Shadi ka sauda is definitely wrong whether it is good or bad marriage.
But divorce when you think your marriage has no love is not wrong!
At present Sadi is probably confused .When she signed the divorce probably she had 3 things in mind
1.She was desperate.
2.She thought (as she told Vasu) if there is love, her marriage will still survive, Alekh will understand she did it out of Majboori.
3.Part of her mind she felt Alekh did not love her too... which sort of get confirmed for her when she saw Mallika with Alekh's love letter.
Gosh...this too complicated!