Bride Caeda -ATK +Def

Might be pretty tough but it may be possible if you really wanted to use her. The +Def isn't going to make a difference really, she's going to die against any archer in one shot most likely, and the -Atk really hurts because her neutral base attack is already really low. I would say if you are dedicated enough to get at least Rally Attack and Hone Attack on your team around her it's still possible to use her strictly against mages or low res units who can't retaliate. But that's only if you don't have a better blue mage