It's the game of Love and Marriage which is the differentiator here and also the base of this show if you think back to the promos. Nandini asked for love and Mauli for what to do for marriage. The sindoor falling on her head was indication that she should be continue with the marriage but as Mata never disappoints as per those two ladies, Kunal will always love Nandini. It still seems that Nandini will go away as per yesterday's episode. but today will tell us the illogical logic of transferring the sindoor.
I do agree that makers have lost it with this pooja and rituals, why do the have to get divinity in this just beats me.