Who is Wendy Pritzke from Lost and what is their importance?

Wendy Pritzke is the main character of the novel that Winnie is working on within Lost. In her story, Wendy is in London and being haunted by the ghost of Jack the Ripper. It becomes apparent throughout Lost that Wendy's story is not as fictional as Winnie claims; it is actually a retelling of Winnie's own past.