The problem here (unlike her first gothic -- The Linnet Estate) is that more than the Irish mizzle and mud keep this slow underfoot -- the local lore (from banshees to Druids to darker rituals) threatens to be a winding sheet not only for Jan, looking into the ruin of a tower her grandfather bought, but also for the story itself. The latter consists minimally of (a) the death of her friend, a geologist who joins her in all those caves and bogs and (b) the seemingly unreturned interest of her young man until the last page of many devoted to the scenery. Although better written than you have any reason to expect.