The Third Party are fanatics. They're a cult and they believe they have to kill every last person in Luceti and in the other enclosures like it. I don't know why exactly, but I think they want to make sacrifices to their god or something.

[Although she's not someone who's eager to harm others, she can accept that it's best to kill members of the Third Party when faced by them.]

I know some people wanted to try reasoning with them...but I got badly hurt by them once. I'm not going to make the mistake of trying to talk things out.