From a diff perspective u are right that we can assume that K and P trusted and understood each other's viewpoints and supported each other... Both made the sacrifice for samar's sake ... but the CVs have not shown this clearly... the episode was totally garbled and hurried...
Also in my opinion... there was no need for such a sacrifice in the first place... the entire scene was unconvincing...
On the one hand, P is protesting the Thakurs superstition and old fashioned methods of curing children, and on the other hand she accepts SS words that she will not take care of Samar properly as soon as she has her own child... totally contradictory...