Plot: 
 -Decent plotline. It follows standard girl comes of age to discover that she is the chosen one (one of three this time), gains magical powers, and has a sacred duty to save the world. 
 -The pacing worked well and kept me interested. 
 -The book brought up some questions, answered some, and left others for readers to guess at. 
 Characters: 
 -The character development for the three main girls was great, though Grace doesn't really prove that she has all the characteristics that she and the author say she has. 
 -The three girls have very distinct characters, which translates into having easily discernible voices when switching points of view. 
 -Side characters could have used more development. 
 World building: 
 -World building was left wanting. Tell us more about how mythology fits in. Tell us more about Athena's grudge. Tell us more about how the creatures relate to each other, live in the other world if they can't survive without the human world, and how they survive off of humans. 
 Other: 
 -School and family side plots felt tacked on. If they had a little more depth and were given more time, they would have felt more natural. 
 -In the beginning, there were way too many adjectives and descriptions that threw me out of the action, especially when Gretchen was fighting. 
 -Gretchen's standard tough-fighting-girl attitude lasted only the first few chapters and was rather annoying cause stereotypes. 
 -Hey, two out of three main characters actually have parents. 
 -The chapters were written so that there were scene jumps that did not have any indication via symbol or spacing, which made it hard to follow. One second Gretchen is asleep in her house, the next she is being shaken awake by her teacher.