User blog comment:IamJakuhoRaikoben/Chapter 484: The Monstrous Six, Review./@comment-7418318-20160509222727/@comment-24546844-20160510113317

Just as Nick said, FT has nothing to offer to August and their defeat is supposedly unavoidable. Brandsh, an Alvarez soldier, serving as mediator for a negotiation, unless she's negotiating FT's peaceful surrender, would be seen as obstructing Alvarez's advance and gaining time for the enemy. In any war this would be seen as subversive posture and she would at minimum be taken into custody. Just because she said she isn't turning coat doesn't mean she won't be suspected. Also, consider that she's originally from Ishgar, all the more reason for her to be suspected.