I saw a description of this book "A Great and Terrible Beauty meets Cassandra Clare in this spellbinding fantasy" and I totally agree. I was thinking of A great and terrible beauty throughout this entire book. 
 Ever since I saw the cover of this book, I have been dying to read it therefore I had high expectations for it. While it lived up to my expectations I feel in some aspects I didn't like some parts. Towards the end of the story, I had a lot of moments were I gasped out loud because I wasn't expectation certain things to happen that did. I wish that happened throughout the book instead of at the end. 
 I really liked Cate. I thought she was a strong main character and I loved her relationship with her younger sisters. I love how she chose to go into the Sisterhood at the end instead of marrying Finn because she wanted to help her sisters. That is a true relationship that I like that continued in the story and stayed true. And I loved the chemistry between Cate and Finn. After watching a review on YouTube, I understand why she said she now says that closets are steamy ;-) 
 I knew that this book was historical fiction but I don't even remembering the story actually saying what time period it was until about a quarter of the way through the book. 
 I will probably read on in the series.