 Her works have maintained a level of popularity through the years since their publication, however critics have described her later works to have been inferior efforts compared to the original "Alfar" series.The "Skyla" series in particular was noted as "less ambitious" and darker yet slow-paced, patchy, and tentative.Other critics attribute her lack of popular appeal (compared to contemporaries like Tolkien and Lewis) to a narrower thematic subtext.