Incredibly white skin, pink eyes -- if her hair was white instead of black, I'd say Gavia was probably an albino.
I suppose it's possible that she has no skin pigment or iris pigment, yet for some reason still has hair pigment, for Super Science Reasons having to do with enhanced biochemistry + nanos. Come to think of it, though, if she had no skin pigment then her skin should have a kind of pinkish glow, due to blood in her capillaries actually showing through the skin.
So I'm not sure what the bone-white skin coloration is supposed to indicate about her. Any ideas?