I didn't see any lead breaking her promise. Here today Divya broke couple of Vows. She touched Raj(yeh to bohot pehle hi break kiya) and she was taking care of Raj...
I think at least they can show Div trying hard to not break promises if not anything else. Because these things are making Divya the weakest character.
In CB1 we saw how Radhika tried hard to keep all her promises to Vishakha...