I think CVs are giving Santu 2 much responsibilities as she has 2 fight 4 her rights, solving z problem of all M Family members as example saving DM honour, fight 2 get her son back, hiral problem, birwa, sarang n monghi stupidity n bearing MBen bakwas n for past couple of month they r showing a very weak n helpless DM so may b this z reason 4 her carelessness towards Vishal. It is only my POV.
Santu's priority have never been shown in right place. She always puts her marriage, husband and now her biological child behind everything else. Unfortunately CVs has spoiled her character to make her a saint. This start becoz her priority were wrong. she shud have told someone in her family about her pregnancy. What was she planning to do, bring her child in prison and hence gave meghna a chance. Anyways it just a story whihc has now gone hayway.