Not even Cecil could've defeated Golbez alone at that point in the game. He couldn't even beat Kain. Why should anyone hold it against Rosa? What could she have done? She couldn't run and hide. Fighting back alone would've just gotten her killed. If Rosa as the white mage can recieve ridicule for being inable to defeat Golbez, why doesn't Cecil face even worse ridicule. Rosa heals quite well. Cecil couldn't even beat Golbez's sidekick, and he's the game's heroic swordsman. Somehow, Cecil is praised as one of FF's greatest heroes.