"Interrogator": "Who was Shreya and why was she unconsious?", 
"Interrogee": "So Shreya was also one of the CID members, and she was also on the train with Daya and Purvi. She was in disguise and was also trying to capture these gang members. However, Shreya was choked by some man near the restroom and was left unconscious. Daya found her and took her to a private compartment. He asked the nearby passengers to nurse her. Afterward, Daya and Purvi left Shreya with those passengers and went to find the gangsters."