The Faerie Ring is a great read! Kiki Hamilton has a wonderful way of writing where you're really transported to Victorian London, living in the slums where survival is a question mark. I found the integration of faerie lore into Victorian London well-written and the fact that Hamilton wrote the Unseelie fae to be mean, vicious creatures was definitely a bonus. 
 Tiki was definitely the star of the story. She showed great maturity for her age and I felt so sympathetic to her character, especially whenever her heart broke just thinking about the living conditions her "siblings" had to live with. She truly just wants a better life for them and for that, I can understand her motivations in the novel. 
 I quite like the character Rieker as well. He isn't who he claims to be, but deep down, he has a good heart and he can be rather charming as well. His back story fitted well into the plot line, but I found that his actions towards the ending (view spoiler)[he asked Tiki and her family to move into his house (hide spoiler)] to be rather convenient, and honestly, he could have done so a lot earlier in the novel. 
 The whole treaty business was well developed but more secrets were unveiled as well, which definitely keeps things interested for part 2. Great story line and great characters so I'm definitely excited for the sequel. :)