Sarey fasaat ki jar kk aur wadhwa piriwar hai.
First that buddha dadaji pressurized sumit to take the responsibility to remary kk & sumit by pressure married that kk.
Today kk influenced her son to choose responsibility over happiness & history repeated again.
Kk is an example of a selfless nari. If she was too good, y didnt devorce sumit at that time when she is knew renuka was in love with him.
I dont blame renuka to become evil, coz obvoiusly someone's boyfriend betrays ur love and trust, plus defame, then oneone can become hatred.