I really liked that the author took a more realistic approach to what it would be like to have the kind of job Gaby has. It isn't shown as glamorous, and Gaby is continually having to worry about hiding what she does. I also found it very interesting that she is shown as religious and believing that her ability to find and kill demons is a gift from God. Most authors try hard to get rid of religion in genre fiction, but the simple fact is that religion is a huge factor in our society. It was nice to see an author write a book that isn't preachy, but acknowledges religion as being a part of a lot of people's lives, including the main character.
The writing wasn't bad, but was rather flat and simple. There were also some spots I felt were rather melodramatic, and could have been toned down a bit with better word choice.