This extremely pale individual certainly isn't a fiend from the Lower Planes, here to bargain, cajole and scam mortals into giving up their souls, artifacts and whatever else. She very definitely isn't hiding horns under that hat, or talons inside those steel toed boots. Pardon my funny walk. No no, of course she hasn't tucked a tail down her trouser leg. What's that? Bulge? I don't know what you're talking about, I'm sure.

Although, half the time she doesn't seem to bother.

Talk to her about:
-Souls.
-Artifacts.
-Customized equipment.
-Rare delicacies.
-Favours.
-What you're willing to give in return for all this.

Tell friendly as anything!