I was expecting a post like this and I agree with everything you've said. I won't lie, I loved the scene, gushed all about it on another thread, but it did feel out of place. Even while watching it, I kept wondering whether there was some mistake in the sequence of scenes, because all of us had clearly expected this to come after Raghav's panic attack.
The only reason I can think of is, CVs didn't get to include any of the classic ITV post-forced marriage tropes here because of Shivangi's absence –sharing of the same room, attending pooja, angsty intense confrontations where the leads are all over each other –and felt like it was high time they gave something to the audience, like giving candy to pacify a crying child. It also seems like they're stressed about the ratings and are trying to satisfy both the TRP audience and online audience.
I'm probably grasping at straws here, the only way for this scene to make any sense is to not take any of Pallavi's threats or call for revenge seriously. She has always been all bark and no bite, very inconsistent with her actions. What Raghav did to her this time is no trivial matter, but seems like she's more concerned with the immediate issue at hand– force marriage. She must have felt that the widow stunt she pulled at the reception was an apt retort to that and learning that Raghav was forced into it by Amma might have softened her. This sounds lame even to my ears, but I could live with this, because irrespective of how illogical the entire sequence was, I enjoyed it because of SaiShi. I was expecting and hoping for angst, but all we got is comedy so far and I'd rather take flirting and romance over the latter any day.
Another reason, which I'm afraid to voice out loud is that may be they're under the radar now and have been asked to wrap up things quickly. But it doesn't really make sense to axe the show as even Star Plus cannot guarantee any show they decide to replace this with to fetch more ratings. 6.30 PM is a weird time and it's only a gamble for the channel, so why not continue with a show that at least has a solid online following and stable ratings?