I'm still not entirely sold on the premise of her argument because I don't really buy her argument about what exactly skepticism is - that is, her definition of skepticism seems to have more to do with...how happily ever after things are and I think she's reading it out of Tolkien and I'm not sure I see it there.
Having said that, the way she traces the role of faith and hope - the consolation of pre-evangelium, as Tolkien would put it - makes a lot of sense and her larger argument that fantasy takes some of the role of religion in giving up hope for the future is compelling.