I completely agree with you..this is the same thing that I was tihnking..that it would be good, if someonegets an Idea abt ANYA, in Navya house..it might prove to be good, when Rama will be showing her true colors..3 people in Anant's household know about the affair. One of whom - Rama Bhabhi is hell bent on bringing the affair out in the open by pushing/encouraging Anant.
So, I guess before Anant's family finds out, it is good if Navya's family has an idea that there is something going on in their daughter's life. It is better if Meeta finds out as she is the sensible one and is someone who protects her daughter.