If your emp drops to zero... well, game over...hope you had a save close...
Of course therapy should be available, and expensive, to regain some lost humanity... Drugs may help some too...
IIRC ( been a long time since I played the PnP) the therapy also involved REMOVING cybernetics to try and bring the Empathy back. The woman in the trailer is probably a good example of EMP 1. She gets lucky and the Phyco squad picks her up for therapy. They might remove those scythe blades and some other things to get her humanity back.