Umm the daughter and son are siblings and they don't have to like each other they can be enemies. As for Lux..... Yeah I agree. I would've shipped her with Barris but we all know why that wouldn't work.
Now I am confused, daughter and son? I missed something there, didn't I?
No lie, my Ex shipped her with Lux heavy! I mean really, really, really heavy. I would always mess with her saying that in the books following order 66 she actually got with Rex, but thanks to Disney destroy the EU we all know why that won't work either.