What if this whole punishment is an act by Princi along with Anand and Vishakha. What if after giving the form to Sameer she called both Chachaji and Vishakha and informed them? She is 100% sure it's Naina and she knows he's protecting her.
Why I think this, is the whole punishment of banning from taking exam is weird. It's not such a big crime for such a punishment. And then banning from exam without parents consent also seems odd.
Kuch toh gadbad lag raha hai...