Try Joan... by the time you see her your 60% DEF will be up and you'll only take 3K every bad burst AND you still have the damage cut ability to work with. You'll need strong secondary healing to keep yourself going and a little luck (she doesn't do that crazy attack every round) and save every healing potion for her...
Bursting the first turn (or second) was what killed me the first time with her... You push her into rage and then can't push her out... You got to kill her without the standard tactic of saving full burst to force cycle change. She will kill your chances of a full burst guaranteed. This comes to normal attacks and ability damage. That and also rage (not stun sorry) punishers can help also.
She definitely takes a different team than the standard builds we're used to... she's actually kind of fun that way!!
Dejnov.
P.S. Cursed Canting Chains... that is what helped me when I did my Andromeda run. That reduces the damage by 20% and can stack with Hime defense up skills (4k damage), that and sub in the Kaiser Dragoon or Ray Dragoons for Dark resist or Raiko, Amaru also. Also look for heavy healers like Dian Cecht that can create potions and store them up for that battle.