If Liadrin were actually delusional and killing Red Cross doctors while bragging about how darkness cannot abide within the Light, she'd actually gain one more character trait rather than her current zero and perhaps make for an interesting Ophelia-like figure.
But that's not reality. In reality she was one of two or maybe even three questgivers who can narrate that quest alongside Usha and Cromush. The healer is an elite monk who can break people's spines with her bare hands and heals soldiers to full with magic powers making her just as standard a military target as any other priests we kill by the truckload in just about every zone. And Liadrin is still the most boring woman alive.