Copy pasting what I have posted in another thread, w.r.to why Ishwari's interference is needed temporarily at this juncture.
Adding to what Shaavi has mentioned on why Ishwari's push is needed to bring out the real feelings of Dev & Sona to the forefront, I would say, that is where the recent chupa-chupi khel has a significant role.
As the game starts with Ishwari as the seeker, Dev sends Sona in his opposite direction (similar to how they parted their ways pre-leap).
Then it is shown, Sona comes back to where Dev has decided to hide and hides behind/with him (similar to how Sona came back to Delhi and after the initial fights & Khatri issue, is now seen to be walking with him)
But later, on her insistence, they decide to change their hiding location and in the process Sona gets hurt. Sona's painful sound is heard by Ishwari and she comes in their direction searching for the hiding party, but stops seeing Dev & Sona being in their world, playing friendship game.
That was the symbolic part to what is playing out in the current episodes. Dev & Sona are hiding their feelings from others - Dev hiding it beneath his promise to Sona that he will never again talk about their union and Sona hiding behind the mask she put on when she promised Bijoy that she will never have a relation with Dev.When we are playing the hide & seek game, the hiders are either found by the seeker or the hiders themselves have to come out. In Dev-Sona's case, they will never come out because of the promises they have made. So, the only option is to find them out. That's what Ishwari is doing now. Somehow, Ishwari has sensed Sona's pain (in Monday's episode, Ishwari remembers the fateful day when Dev told Sona to go away, followed by the dialog 'vo bichari dar gayi he') - and it has got her attention. So, on the basis of the clue she got, Ishwari is now moving in the direction to find them out. But midway, she will be stopped to give Dev & Sona their own time. After which kids will join Ishwari in her happiness and as the light comes back, the real Dev & Sona will be revealed to the whole world.
Also, after Dev's confession on the tyre-changing day, it is Sona who has insisted that they will remain friends forever. Now that they are roaming around without any hindrance in this friendship phase, Sona should get hurt to blurt out her pain to Dev. So, with this match-making game, Sona is going to get hurt and that's when she will pour her out to Dev. After that, Dev is going to take the lead and first thing he will do is to relieve Sona from Bijoy's promise. And all this while, Ishwari will only be a spectator like us, enjoying this phase...😊
Hope this makes sense and help those who are not happy with the current track, to get relaxed...😊