The youngest of two siblings, Medea had an older brother named Adrian once. That was a long time ago, and sometimes 'Dea doesn't want to think about it, other times she can't help but think about it. Their family weren't well off, and both Adrian and Medea grew up in Pyxis. Their dad fucked off one day and never came back. Probably he died. And it was just them, and things were difficult, but not impossible.
She still doesn't know what it was, and maybe their mother doesn't really know either, but Adrian got really sick and nothing seemed to make it any better. And at the end of it all, their mother got tired of fighting it, or something, and one morning Adrian was gone and he never did come back.
It took a long time before Medea got her to admit what she'd done. In a fit of desperation she'd given Adrian to the Republic for use in the Special Other Forces. Medea saw red, and their mother tried to apologise, tried to backtrack and say maybe she'd made a mistake and she regretted the choice now but it was either that or watching him waste away and die and that was too much for her.
But Medea never forgave her. It was too late for sorry, too late for maybe I shouldn't have, it was too late for I made a mistake. It wasn't like Medea had any bright ideas. Nobody had ever turned against the Republic and lived to tell about it. Except the Outlanders, whom had remained quite a thorn in the Republic's side for a good long while. And maybe somewhere along the way, she'd come up with some brilliant idea to fix this.
That never did happen. These days, she just makes a life out there, catching fish and selling them in the Dome. (It's not as if she knows anywhere else to go to do that.) Someday. Someday, brilliance will strike, she just has to be patient. Or maybe she'll spend the rest of her life not having a family anymore. Who knows. It's worth it to her. Most days.