The artwork was unimpressive and basic at times, which was a surprise because Hague is usually an excellent illustrator. In this book, he went too much for profiles, too many times we see the girl (who his wife Kathleen chose to give a name here) in profile or semi-profile, which isn't good, it looks like she's avoiding showing her face and emotions to me.
And also, the trolls are caricatures. They look weirdly pig-like, which was so strange! That makes them look more like ogres than trolls, which aren't supposed to be like that. I don't think Hague had his heart in this book, his output is so disappointingly bad for his usual work. At least the adaptation of the text is fine and faithful enough, the name chosen for the heroine, Ingrid, is at least appropriately Nordic-sounding too.