When exactly do you think she will be old enough to know the truth? The longer it is before Tammy finds out, the higher the chances of her reacting badly to it. What if she turns around and says Khushi has known for years that her mom is dead, why couldn't you tell me that my dad died when I was a small baby? What will Ragini say to that? How will she get out of it? IMO, it's always best to bring out the truth ASAP than wait longer. The longer you wait the more problems there can be. And exactly what is Ragini going to say when Tammy questions why there are no photos of her dad around, why nobody talks about him, why there is no puja for him like there is for Sadhna? Is Tammy really going to buy that her dad, Ranvir, wanted all of this?Tammy will know about Ranvir, but now is not the right time she is toooooo young to understand the truth & accept the reality.As for Ragini finding out Ranvir Died Saving Anmol I think Anmol will say himself to her just before they start new life after Ragini realises her love for him then she will take time to understand & Sharmaji will make her understand😊