In today's episode (april 19), Jai was like two pages away from knowing Bani is alive. When Rano was narrating about Jai and they show him in a car reading the newspaper, the last page said "[name obscured by camera] is back from the dead".
Now I'm sure it wouldn't have said Bani, but wasn't that foreshadowing/symbolic that Bani will come back and though Jai has the oppertunity to find out in his face, he still might not notice?
This Leap smells like Janki- rest of Aggrawals from KGGK! Also, just like KGGK, I think it's Rano that will be the first to find out about Bani/Durga and like Kamal (KGGK), she'll help Bani.
Another question, is Raashi dead?