I am, however, not sure if Santu will reach there on time (i.e., before marriage)...as it said in an article that she will fight for her right once she gets to know about the truth and it could be very well that this happens once Menga is married to DM (which really is bothering me).
Other thing is that Santu used to write Shashank from Jail. Perhaps he knows something about the event? Where is he nowadays?