Moon Magic by Dion Fortune

Almost 15 years after she first appeared in Sea Priestess, Dion Fortune wrote about her heroine Vivien Le Fay again. In Moon Magic Vivien appears as Lilith Le Fay, and uses her knowledge of moontides to construct an astral temple of Hermetic magic. The viewpoint of Lilith Le Fay is purely pagan, and she is a rebel against society, bent upon its alteration.