Maybe they were able to retrieve data somehow, I too did not understand. Even when Sid got the call at home from the ppl he looked confused as well. I don't care how he got it, but he got it and is aware that it was Shabnam all along. He even blamed himself for it all. I feel when Roshni wakes up and Sid is there talking to her, he might be blaming himself for what happened to her and she might try to tell him that it was not his fault. How could he have known any of it. She will tell him that he was doing what he felt was right. Sid might not do anymore unnecessary social work (to hopeful) as every time he does something bad happens to Roshni or someone in his saasural. He will get more angry at Shabnam knowing that she tried to harm his Naanima.