1. I feel it sets a stage for brij, sushma and the baby getting together as a family. Brij reforms, begs sushma, who is already getting second thoughts of the baby being given out...brij accepts the baby and they all move to another area and live happily ever after. Pl note that Sushma still wears a mangal sutra etc.
2. Deepu hugging a crying poonam: sets the stage for deepu to go against his mom and get a job with his FIL...soon becomes a ghar jamai.
This sets the stage for Padma to be completely dependent on Jyoti.
Poor Jyoti...with such a burden on her head...she refuses Kabir and proves that she is the true Mahatma here.
End result: Jyoti is the middle class elder sister who gives up all happiness and earthly pleasures for her 2 sisters and her brother, and supports her elderly parents and grandma till teh end.
Afterall, over an year back, that was the basic premise with which this story started.