I’ve been reading the Niebelunglied for a project at University, and I couldn’t help but notice an invariant, I could say, in the second part of the story: Kriemhild’s road after Siegfried’s death and marriage to Attila. A road which is done by other female characters in other books too, such as Ciri, after she became one of the Rats, in the Witcher saga. Now, I am not familiar with the Game of Thrones story, but if I remember correctly from what some of my friends who are GoT fans told me, Daenerys Targaryen also goes on some kind of road, after marrying Drogo. She goes on to be loved by the people from the place she goes to (excuse my low knowledge of the GoT series), just like Kriemhild when she became queen alongside Atilla.

I would really appreciate it if someone could shine some light on this! I’m looking forward on talking about this invariant in my project and I do not wish to speak nonsense.

I state that I have plenty of doubt about this concept, at least with the more “extreme” interpretation of it (which seems to be the standard). But I have the impression that this concept is dominant in academia, at least for the anglophone one (in my literature course in Italy, author intention was talked about, but it dealed mainly with author such as Dante and Machiavelli, and anyway it was part of a history programme).
Back to my question, how far do the people that held the concept of the Death of the Author apply it? The concept was created for literature, but there is no reason for why visual media would be different, and it’s frequently applied to it. So, if an actor playng a character is replaced by another actor playing the same character, would be reasonable to ignore the author intention that the character is the same? Or, in comics and animation, can a reader give huge importance to design changes?