Boa is on to Arati and the Dubeys, like a wasp on honey, and will not let go before getting her stingers into hive of secrecy, or at the very least, before kicking up enough dust in the patina of denial and secrecy surrounding the Dubeys and Arati so that they are no longer able to sweep up their lies complicity under the rug.
I believe it has been mentioned earlier that once the divorce cat is out of the bag, the plot of PV will be anorexically thin. The serial could possibly fizzle, as there is not much else that can make the audience grip their seats in suspense (unless there is some foul play/mystery with Arpita's death, or if Arpita is not really dead, and comes back to life, which could be very interesting). Therefore we can expect the CVs to treat the divorce issue like a milch cow, and get the most mileage out of it. I can easily imagine how Arati's (456th) resolve to "tell all" might be postponed tomorrow --a child needing something, a phone call, more EB (emotional blackmail) by the weeping Dubeys. What I cannot imagine is how will everyone, especially Arati, after today, go about their lives as before with the lies hanging all around them like the diwali lights?
Already, the members of this forum have started to feel that Arati's rationale for keeping these secrets from Yash is looking increasingly flimsy as each day goes by. The divorce truth can be revealed whenever, but what is more important is that PV is watched by a highly intelligent group of logical viewers who will not pack up their reasoning and be made to swallow whatever is thrown their way. For the creatives, who I am sure are quite aware of this, it will be interesting balance of sorts: Do they reveal the truth now, and then work on keeping the plot interesting later, or do they continue to suppress/postpone divorce and BMT truth, but then strive to keep the plot interesting in the present and the audience engaged? In the meantime, let us enjoy the episodes and see how this plays out.