Such mixed feelings on this one! Jenny Greenteeth is probably one of the most interesting and unusual protagonists I've read in forever and for the first 20% I was very intrigued as to the time period and setting of the story. The way this book focuses in on British mythology and folklore is right up my street; I found this novel full of familiar characters and creatures: goblins, witches, unicorns, the high fae and wild hunt.
However, once this gorgeous medieval setting had been established, and our main characters had their mission, I started to lose interest. The dialogue during each scene often felt slow, and like it lacked purpose and, despite the brave adventures they all went on, I never felt like the stakes were that high (perhaps it's leaning on some of the ideas of cozy fantasy?).
Then again, the book pulled itself back at the very end for me with some Arthurian mythology and some dramatic twists and turns in the last few pages. A mixed bag!