Memory

This is basically a quest story. But the nature of the quest morphs as the story moves along. At first young Jubilee sets out to recover a lost brother. However, as she learns more about the ‘Silver', she finds that she, her brother, her ‘lover', and a few other ‘players' have a seemingly impossible task. They in fact must try to save their world. It is a tough road for a 17 year old.
The world of Memory seems infused with magic. However, as the story progresses, it becomes apparent that it is ‘magic' in the vein of Clark's third law and that the world Jubilee inhabits is in fact artificial, and a nanotech system basic to that world has gone awry.
This story is set in the same universe as Nagata's Nanotech Succession series but is unrelated to those stories. (According to her blog, it looks as if the story lines may come together in her next book which is now in progress.)
Good book with an interesting and slightly surrealistic feel.