How has she not pieced together that its Harjeet after killing her baby? You think the biggest realisation would have been when she found out who Ahaana's in laws were. (Yes Naina, thats who Ahaana was talking about when she said her in laws want to kill her and the baby.. Not their padosi).
Shes all fine doubting Raghav wanting to kill her baby but wont even acknowledge that its Harjeet after the baby. When Raghav was going through the different scenarios with her today where she almost died, it didnt even click with her.. "oh wait.. what do all these situations have in common? ... HARJEET!"
So much for being a well educated professor. And she happily turns up at Harjeets house alone, and hangs around her and talks to her like normal.
I dont know about you guys, but this is getting ridiculous now. There literally is zero logic left in this serial.. its a joke.
And dont get me started on the fact that Naina isnt telling raghav the truth about the baby and acting the victim all the time.