8/10 I like the title. The plot you outline here sounds really interesting, something I haven’t heard before. I would definately check it out.
This is the only thing I would have left out. You finish strong and this kind of softens your summary.
When Arwyn finds out she has to marry in order to become Queen, she runs away with her best friend. Together the look for a place to live but when an old man aks them for a favor their world is turned uspide down. They slowly discover a forgotten history which will change everything they know about their home and their safety. Together they must find a way to bring the forgotten events known again and prevent the plans of the current ruler no-one knows.