Well, it is definitely possible to have an adopted sister, though there's some kinks with the business of it being an Au Ra that you might want to look into so as to explain things better. Mainly this would be why/how/when they'd have escaped their homeland Doma/Othard. To clarify, Hyur and Au Ra come from two different places in the world, and the Au Ra have since about the point of Heavensward happening been fleeing en mass to get away from the Garleans. Whilst there may have been a few that got to Eorzea before this mass migration, it's my understanding that it wasn't a great amount and so they may have been subject to a healthy dose of "We don't like strangers and also you look like a dragon/demon" judgement from strangers. Heck, that might also have happened coming with the mass migration, but it'd definitely have been worse to be the odd one out so to speak. It's also worth noting that the Au Ra have their own language(s).Â
For the other races, it's a well known thing that people take in/adopt children of other races, as there may be reasons the child have been shunned by their own culture. For example miqo'te children of mixed clan (Seeker/Keeper-mix) may be abandoned because it's traditionally frowned upon.
For the other races, it's a well known thing that people take in/adopt children of other races, as there may be reasons the child have been shunned by their own culture. For example miqo'te children of mixed clan (Seeker/Keeper-mix) may be abandoned because it's traditionally frowned upon.
