Don't Go, Jason Waterfalls — Michael Atkinson

Sally, the Sanguine Sorceress of the South, has been cast out of the Land of Oz, and found herself stranded in a mysterious Island. There, with lovelorn fanfiction character Darlene Dove, the Ghost of Hamlet's Father, and more, she teams up with Jason Waterfalls, Lord of Charmingfell, in a heroic attempt to escape the Island. Little does she know what peril awaits her...