When Wendy was a child her mother tried to kill her and ended up getting herself thrown in jail for child abuse. Only what we learned in the last book was that her "mother" was right all along and that Wendy wasn't really her daughter. Wendy never knew this herself though until she learned that she was part of a whole different culture (species?). 
 I love how she pretty much gave us a FULL recap of the last book in a few paragraphs for people like me that waited to long to read the next book ha. (view spoiler)[Less than a month ago, I found out I was a changeling--a child that is exchanged in secret for another child. Specifically, I was switched at birth with Rhys Dahl. It turns out that I'm a Trylle. Trylle are basically glamorous grifters with mild superpowers. 
 Technically, I'm a troll, but not in the creepy little green monster sort of way. I'm of normal height and fairly attractive. In Trylle culture, the use of changelings is a practice that dates back centuries. The custom's intention is to make sure Trylle offspring have the best childhoods possible. 
 I'm supposed to be a Princess in Forening--the compound in Minnesota where the Trylle live. My birth mother is Elora, the Trylle Queen. After spending a few weeks in Forening, I decided to head home. I had a falling-out with Elora, who had forbidden me from seeing Finn Holmes simply because he's not royalty. 
 I escaped and took Rhys with me. In Forening, Rhys had shown me genuine kindness, and I felt he deserved some of that in return. I brought him here to meet Matt, since he is really Rhys's brother, not mine. 
 (hide spoiler)] The Vittra want her for themselves though and they'll stop at nothing to get the princess. 
 I want to like Wendy I really do. She's our protagonist and is obviously trying to make changes for the better. She's attempting to harness her skills for battle to protect her kingdom, but the amount that she allows her heart to get in the way is so annoying. It really gets in the way of me truly valuing her because love triangles piss me off more than anything in a story (except for in The Infernal Devices). 
 (view spoiler)[The Vittra are under a spell that causes them to be incapable of having normal children. Wendy is the king of the vittras only hope for an heir to his throne (he's her father). 
 Loki and Kyra captured her and turned her into the Vittra king. Though she escaped with the help of Finn, Duncan, and Tove that work for her mothers kingdom. 
 Majority of the book she's whining over Loki being held captive in the kingdom, crying about Finn ignoring her, or training with Tove. Tove who she is arranged to marry when she turns 18. Seriously chapter 26 she's kissing Loki and he's proposing to her and saying they run away, chapter 27 she's kissing Finn but then he's running away ashamed of their relationship, and chapter 28 she's having her engagement party with Tove (who is gay).....WTF GIRL! (hide spoiler)]