The book started out as a painting exercise. She read about a monk who painted a hundred demons on a handscroll in 16th century Japan and decided to try the project herself. The book itself doesn't focus on all one hundred demons, though there are probably at least a hundred painted around the borders. Instead, Barry chose a handful of demons, many of which may be familiar to you, and wrote stories about them. Below is the beginning of one story, featuring one of my own personal demons, dogs, with whom I have a love-hate-allergic-fear relationship.
Other demons/stories I identified with were "Girlness" and "My Worst Boyfriend" and "The Election" and "Common Scents."
The image above looks a bit washed out on my monitor, and maybe yours, so here's another one where you can see the intense color she uses, a feature which really made the book for me. I would have loved it just for Barry's humor (especially as a highlight for actually serious topics) and self-deprecation and story-telling skills, but the lush gorgeousness of the art was icing on the cake.
Barry has many other books, and as soon as I finish writing this, I'm going to add them all to my wishlist.