User blog comment:Gourgeist/Shingeki no Kyojin Chapter 66 Review: Wish/@comment-3203692-20150212184159/@comment-99.120.99.33-20150307222743

My theory is that during her fight with Grisha, Frieda finally realized the lies Rod told her and felt guilty for eating her uncle. I had a feeling she didn't want to be a titan and rather live her own life free from her family's legacy. However because she was injected with the titan serum, Frieda couldn't go against her fate and the only hope she had was through her sister, Historia. In some ways, she and Ymir were helping her fight against her fate in following Rod's dreams of a Titan controlled future. Frieda succeeded when Historia questioned their father and decided to take control of her own destiny.