The right way to approach her would be to keep in mind that A: She is a demon, B: She is a Paladin, C: She is part of a Mercanary Group, D: Paladin's live according to a code of some sort typically with a strong sense of duty even.
Yeah, we could start two threads, I think you could start the meeting of evil thread, and once we come up with a few more ideas, the one where Ghost and Eis meet ^_^