I think CVs did this bc Suwarna's brother will come and blame Suwarna for the loss of Shubham. If she didn't give him up and mishandled him, Shubham (who he raised as his own son) would be alive.
Then Suwarna's lights will flash and she will realize how it feels to get blame for murder when it was Shubham who gave into drugs.
This is only a theory though.
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