As many others have already reviewed, Dark Witch is an unimaginative recycling of Dance Upon the Air, and it hurts me to say that because I love NR and had high hopes for this book. I wouldn't have cared that she reused the witch/Ireland plot (as she does often) if the characters hadn't been so boring and one-dimensional. 
 Also, I thought it was strange that we never found out much about Iona's love interest, Boyle. He and Iona all but stop speaking for the last fifty pages or so, and then Boyle springs a marriage proposal on her in the last three pages. Okaaaaay.