Kashish is dealing with the emotions of a woman who is poised at a stage in her life where she needs to severe old ties with her past, break free of her husband who abused her trust and love and start life anew. In doing so, she realises just how difficult it is to severe old ties. Emotions are not like water flowing out of a tap, which can be turned off when not required.
This is not like the other soaps where partners get dumped and the move on so very easily. It takes time and also takes a toll on individuals to get back in life.
The only thing I did not like, is that the way Karan's character is shaping up.