Easily beat her as shadow infiltration with Tharan at lvl 29. No kiting, only clubbing and interrupting. I stack only willpower, power, and accuracy; no **** stats. Proceeded to defeat Vivicar and complete the Fortitude quests at lvl 30 without a hitch. The one I did not manage to defeat is the optional lvl 32 Champion sith sorcerer on the Fortitude. Has anyone bested her?