Kulcsár says towards the end (at the assessment of the test) that Abigail, the spy girl, had to play a double game to deceive not only Jung, but Markó too, into thinking that she is his relative. Though in the movie, Markó said explicitly, that he never sent out the mail to the girl, in which he wrote anyway, that he was too sick to receive her. So Markó must have recognized this ploy from the beginning (he actually asked Jung whether he sent the girl), but Kulcsár (as the supervisor of the test) must have known, that there was no mail sent out to begin with, so it's irrelevant what Markó thinks of the girl (but he can confidently assume, that she is not his niece).
Other than this, it was a very captivating and well directed movie.
Other than this, it was a very captivating and well directed movie.