The Lonious Monk
Celestial Souljah
whats your levels and build? her first phase is really just a gimmick. If you can get to the second one with little effort, then you shouldn't have much trouble.
I'm at like lvl 30, and I'm a Dex/Int hybrid. Like I said, I know how to beat her and I'm confident I'll win. I just die to random shit like her shrugging off my attacks and using her staff shield while I'm still in my attack animations. My guess is that I shouldn't be dying to stuff like that.