I just saw the video. this is what I think...
It looks like kunal is waiting outside the prison for Siddhi to give birth, and have asked Richa to take the baby once born. The background he is standing with the umbrella, looks like prison.Richa took the first baby w/o realizing there's another one.Now I think, Kunal is really back with Richa. Otherwise, why would she take the baby from Siddhi.? If I am not wrong, probably they are already married, that's why the prison custodian handed the baby to them for they have legal rights and why Richa? I guess he has married her finally on condition that she has to be the mother of his child. And we know how low she can go...Well, this is what I conclude from the short video.I BLOODY HOPE this is not true.!