They will try to explain the situation. Yeah, they understand that it sounds crazy and conspiracy-like, but they are at least willing to sit down and talk even thought they displayed the capacity to subdue them, which should at least buy enough credibility for a single conversation.
They admit it's not exactly the most high trust situation. They explain the events at the binary star system. (They don't go into detail about sorcery and make it sound like one of the kinds of magic that was rediscovered.)
(Trevor advises the person talking to the shifty individual. Felix is still watching.)
Well, that's still rather risky, especially if he still wants to be dropped off at home. They could get into an altercation or in an accident or anything that could potentially reveal or draw attention from official sources. Anything that displayed anything unusual would be of Federation interest and even if they never suspect their connection with the rebels and the new colony they might just experiment on them. The fact that they can heal from anything would be... the opposite of a deterrent for both the experimentation and possible torture. The hostages that they recovered only didn't get it worse because the Federation wanted to keep them alive. And that included otherwise loyal Federation staff that happened to be related. Can you imagine the kind of thing they would do to a traitor as soon they realize that anything could be healed? It would be nightmarish. She looks rather pale imagining the things.
Huh, what is their estimate for some sort of compromise? They could staff a second settlement earlier if that is what it took. Would the other divorced be willing to at least talk and iron an agreement out?