DamageOverTime said
I doubt any amount of sheltered life style would cause her skin to be THAT pale.
Just popping into say being that pale without albinism is quite possible, I can say so because I'm incredibly pale(never met anyone paler tbh) and even been questioned if I was albino though as far I am aware I am not. I can't tan either and I live in Australia! Top it off albinoism is actually medically defined by having horrible eyesight, not just pale skin and hair/eyes.
Also Weiss' surname suggest the white hair might be a family trait but we have a guy with purple eyes I wouldn't read too much into it.