Actually, I am curious why that pyro-witch is in that level to begin with. Considering the "Baneful Queen" seems like the type to feel jealous of the scantly-clad ladies roaming around her keep.

She tore the heads off of her assassin-dudes just for looking at her for Gwyn's sake.

http://darksouls.wikia.com/wiki/Mytha,_the_Baneful_Queen
>However the poison did not give her beauty, it only corrupted and twisted her body transforming her into the monster she is now.

Don't see any problem with that.