90 % fire resistance potion...there is also that thing about blessing her, although I fought her without that. I just chain knock-downed her. Easy...
More like, my thing about her is that she is just slapped there without any sort of background

. Not a bad encounter per se, but just out of context. Which also applies to a lot of the Reaper's Coast bosses.
Still.
'I'll kill your shining lights!!' I could say that to a random passer-by in an ominous voice just to see reaction ;D.