As a student of psychology (if you are one too then you must have studied it), there is a disorder called "multiple personality disorder" or the term given is Dissociative identity disorder that exists. As you must have guessed "multiple personality disorder" is a disorder where a person goes into a split personality that they never knew existed. Usually it occurs from time to time or when a person's a child. The "multiple" or the term "dissociative" applies to at least 2 personalities that routinely take control of an individual's behavior with an associative memory loss that goes beyond normal forgetfulness. A person forgets everything about their other personality, however something strong can make a person remember about their other personality. (If you have seen X-men 3 then you must be familiar with Jean's personality where she was pheonix and didn't remember or knew about her other life but then she did later on when something major happened). So the point I'm getting at is that Nupur has a split personality that she didn't know that existed.
Now the cause, according to the description of the disorder the main cause of such disorders are usually major events such as physical or s**ual abuse and loss of consciousness. In Nupur's case the accident caused a head injury which might have triggered her split personality. Due to that she thinks that she is Nupur Verma. It's a possibility that someone knew about her personality knew what would happen to her and hence took her away from everyone.
Her current behavior, such as feelings of vague familiarization or nostalgia are some signs that show that she might have the split personality. The whole different behavior and not remembering anything indicates it. In a typical memory loss, you still behave the same and your name stays the same. You are at least familiar with the close family or people around you and forget the new memories that you made in the past few months or a year or two. But with personality disorder, you don't even recognize the closest person around you. I have a feeling that someone who picked her up from the hospital knew about that and told her something else.
As for other things, such as who the person is or who she keeps calling or how she behaves around that person...either she is faking it coz she is about to die (highly unlikely) or someone's blackmailing her (possible); or she has truly lost her memory; or the best possible explanation CVs don't need logic to create suspense, hence another blooper.
Now for the logic part. That is the logical explanation I can give about Nupur's similar yet different behavior but with Drama or CVs, logic doesn't exist.
Oh and another thing, as much as I hate the typical saas bahu dramas, even this explanation is similar to that (i hope not)...
But let's see what it is in the end....i'm just enjoying it...
Please no Jootas or Dandas at me. I'm just being logical. lol 😛 😆
Comments are welcome!
Rooj