I found the best way to deal with her is level 5 hell spikes. killed her in a matter of seconds, also because of the nature of the spell it prevents her from casting spells of her own. if she does blind you then fade from sight until the spell wares off and attack.
I killed all the black ring members that way!!!! <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
