If there is any way to improve my build, make her kill faster, please let me know.
Boots: Gold find? Replace with eitehr a Dex/Vit roll (200+ Dex) or a straight Vit roll if you don't have the cash. The main thing is: get the highest Dex+Vit you can afford. You can always change purple gems green. So 250 Dex / 50 Vit boots are the equivalent of 300 Dex / 0 Vit if you switch a gem too.
So long as you're using purple gems a similar logic applies to all your gear: you can consider 1 Vit = 1 Dex and can consider things like AR and +LIfe% (on your shield, for example) to be the equivalent of more Dex because they let you switch over gems to Dex as well. And those gems represent another +7K DPS.
And that's all beyond the fact that more AR and defense means you maybe CAN actually stand in a desecration pool or two a bit longer with FoT, which translates to killing things faster. Actually, I'm a bit surprised that you find Pacifism is better for you that OWE. You could be getting another 200+ AR from OWE. In fact, I think you're still better off at least using OWE instead of STI right now. (This is especially true if you just pick up cheap Poison Resist boots)
(I see more people using Pacifism lately. I may give it a shot over STI and see how it feels. I've been skeptical of it, though)