Fourteen year-old wizard Nita's parents are worried about her "relationship" with her wizarding partner (a boy), so they ship her off to Ireland, where she gets into much more harrowing situations (and a romantic one as well) than those she might have experienced if she'd just stayed put in the USA.
My daughter and I loved the way the tiny Bard Cat interacts with her less gifted human allies. The seeming contradiction between the way wizards look -- ordinary -- and what they have to do -- extraordinary -- might be heartening to a child who feels that his or her specialness is not reflected in appearance or circumstances. And, the cameo appearances by Celtic mythological beings are fun.
The discussions of Nita's romantic thoughts (nothing graphic, but probably not of great interest to younger children) and the responsibilities that go along with great power, and the excitement, mayhem, and death that inextricably mix with battle might make this book appealing to adolescent readers, rather than to younger readers.