Josie is a Faerie Kacheek, which is just as well as she trips when she walks. She went to explore Faerieland in the hopes of finding the Hidden Tower, but gave up after she caused accidents in Faerie City with her clumsiness. On her way home, she walked straight into the Hidden Tower.
Although it is not mentioned in the story featuring Josie, one of the victims of her clumsiness in the city was Keidran. She appeared in issue #9.