Hello. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
My tactic was to "keep her going", which means that she must not get her focus on your character !
Keep her busy with ... whatever you like.
I tried to take out thiose "dwarves" first, and then the summoned DeathKnight, and after that Josephina.
A weapon using the spell "Frost" is always a good thing.
I know, she is very hard to beat, and maybe someone else has better tips than me. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />