If Didi knew this was original Vinu and hid it... she is negative and all this positivity is a farce.
If she is negative, she is playing with everyone... but cannot with Vinu as she bore him in her womb.
She saw how V was moping for Sai and if told about Vinu he could fall in more depression and only for Sai... closing all doors for her.
So she might be planning to turn him towards her and then reveal... lekin usse pehle Sai aa gai... ab bataya to pakka V Sai ke paas jayega...
Hence this Mother India garb is to protect that secret and control the narrative... and since she is the only one Pro Sai at this moment... Sai will share any info about Vinu only to P... there by P can have greater control over Sai, over Vinu and has first hand knowledge about everything.
Aap convince ho gai ya main aur Bolu? 😆