ok cool. now that that's settled...
she wasn't adopted either. she stayed with her birth parents (order people), because she was 'trait negative'. i bet this is some kind of blood protein (or eyebrow shape

^some of this has been pretty much established, but after this 'trait negative' thing, i figred the beginning bit had to be said. totally speculation, btw, if you hadn't figured that bit out yet...
just thought i'd throw that out there
agree? disagree? other opinion that neither agrees nor disagrees?