Kools. I cannot agree with you. Purvi is always Cinderella. She has been treated as such by the clan. She is only treated as the princess when she is fulfilling their wishes and when the others are not around. She was Archana's crutch/substitute child whilst her own children were away from her. As soon as they entered her life, Purvi became a shadow in the background of her life.
Ovi largely and teju to a lesser extent treat Purvi like the ugly sisters did in Cinderella.
As for accepting Arjun for either Purvi or Ovi, what was Arjun's crime? That he was rich, born to a rich father and therefore had the advantages that came with it? Since when is that a crime? I think that Archana's refusal to accept Arjun for Purvi was irrational and unfair.
I accept that Purvi and Arjun have made countless mistakes in the way in which they handled situations.
Coming back to the topic. The quadrangle will be accpeted simply because the adults who made the decision that threw Teju and Jignesh together, albeit an unintended consequence of the challenge put to Teju and Sunny, will not be able to accept liablilty and would thus rather accept the situation and hope that everyone else suffers from amnesia.
Let's wait and see how they will make this a pavitra rishta.