I suppose, Pam's transformation started before the wedding itself when she got to know about Neil's repo issue in US...and she started to differentiate between Nivedita and Ragini after the wedding when Nivedita tried creating troubles between NR and how she wanted Neil to know about his bankruptcy and reputation issue in US so that he breaks down and come to her...a very low level selfish person Nive is!
Anyways...As Pam is staying along with NR...its clearly visible to her how much NR close to each other even after contract marriage... and now she witnessed how Ragini is selfless and can go to any extent to keep Neil out of trouble and happy... so this was the final blow on her hatred towards Ragini and she realized that Ragini wasn't wrong all those years...a transformation from hatred to respect...love. Thats the scene worth watching.
Now its Ranbir's turn...