All of you are taking the story too seriously. It is a fiction out of the mind of the writer, who might not have paid attention to details. They just want a twist, and anything will do, so long as they get about fifty episodes out of it. If human beings possess reasoning power, and these characters were humans, they would have done things differently. These are creatures of the mind of the writer, and not human beings. They will work haphazardly, and you think the girl will have a chance to escape. They have put the setting of this old fort in a deserted place, and only a car can take anyone out of this. The only car we saw was the one Akash drove. The other sadhu and the women, went to the river, far away, and miraculously, reached the fort. No one knows how. Perhaps they have a mysterious mode of transport, being evil geniuses. So, you may go on and on, figuring out, how they will get out of this plot. Just wait and see how the twisted mind of the C Vs works.