Hey guys...im just guessing the person who made this mistake is Anjali. If u guys notice in today's episode when Dr.Keerti said that it was Riddhima who did this...Riddhima did not seem shocked..then Anjali put her hand on Ridz's shoulder..and Ridz brushed it off...so I think Ridz knows Anjali did it, but is just taking the blame for it. And we all know Ridz cant do this...especially hide it after doing it...that is just not her! so yeah, I think later on it will be revealed Anji did this...and she'll prolly be suspended or whatever. Also when Arman and Atul were trying to talk to ridz..Anji took her to the side and was saying something...so yea this is just my opinion and take on it 😊