I like the idea that ...
Anstix is a delicate, sickly dragon who cannot leave the Fortress of Ends. Her only knowledge of the outside world comes through stories, and she lives almost entirely in fiction.
Sovari is her one link to reality, an Ice demigod completely enamored with Anstix. She uses her power to bring stories of the outside world to Anstix ... and to keep their characters around so that Anstix can live out her fantasies. If they reject or upset Anstix, well, have fun in the freezer -- or worse.
At first you think Anstix is innocent and all you have to do is get her to appeal to Sovari to stop this and escape. But actually ... Anstix fully knows what’s going on and doesn’t see a problem with it. She’s happy to just keep discarding dragons in the search for the “characters” who will fulfill her fantasies forever, without complaining.
