A gets C married to D without her knowing = wrong
You can't force anyone in to a relationship, especially not marriage. Kumud's logic is just completely illogical. She is a hypocrite who makes no sense. Wish she would listen to herself.
Saras got Kusum married to Danny without her knowing. It is wrong, we can't deny that a girl was fooled in to marriage. But he chose the lesser of two evils. If kusum didn't think she was getting married to Saras, she probably would kill herself so he had to do something. Nor could he marry her because it would ruin 4 lives without a doubt. Saras was not right but he chose the lesser of two evils. He had no choice.
On a positive note, this dialogue was soul stirring. I got goosebumps in these scene. It was a soul screeching out loud.