User blog comment:IamJakuhoRaikoben/Chapter 466: Assassination, Review./@comment-98.164.0.203-20151216211338

Maybe Brandish is a good guy from the beginning after all. I bet she was pretending all the time, got herself captured so that she could be taken by Fairy Tail and can talk to them in private. Then, Zeref, realizing that Brandish is in fairy tail, ordered one of the 12 to assassinate Brandish so that she can't talk to Fairy Tail whatever she wants to tell them.