Trial by Fire (The Worldwalker Trilogy, Bk 1)

This world is trying to kill Lily Proctor. Her life-threatening allergies make it increasingly difficult to live a normal life, and after a completely humiliating incident ruins her first (and perhaps only) real party, she's ready to disappear. "Come and be the most powerful person in the world." Suddenly, Lily finds herself in a different Salem. One overrun with horrifying creatures and ruled by powerful women - including Lillian, this world's version of Lily. "It will be terrifying. It was for me." What made Lily weak at home, makes her extraordinary here. It also puts her in terrible danger. Faced with new responsibilities she can barely understand and a love she never expected, Lily is left with one question: How can she be the savior of this world when she is literally her own worst enemy?