don't be fooled, she's really strong in the defense debuff department.
rare 10% C frame def debuff and stacks 3% more per cast in the stacking frame... assuming you're keeping debuffs up for 12 rounds, she's doing more of a def drop than nearly every kamihime in the game.
my light team build with R kamihime has never replaced her... hell, i just got a no-death R team clear on expert tartarus with her...