well i think that pratigya will come to know about the girl and how shakti dragged kesar out of his room just to sleep with that girl. and may be kesar will cry in front of her and tells her that she is lucky to have a husband like krishna who loves her "only". he is not like shakti who sleeps around with different girls for sexual pleasure.may be then pratigya will try to understand real krishna and his love for her coz its not difficult for him to get a girl for "that" thing.and he loves her so much that he doesn't look upon any other girl.
i just hope something like this happens and pratigya realises how much krishna loves her.