Yes, I understand about leopard gecko albino strains and wondered if that's where she was coming from. Similar issue with boas, there are two incompatible but similar looking strains of albino which means it's important to know which strain you are buying/selling (when the original two strains were crossed to see if they were compatible, the resulting normal appearing double hets were wholesaled off as normals into pet stores, from what I've read).
In general, proving out a normal as only carrying wild type genes is not something one comes across. The statement about being able to trace back to WC origins had me wondering as all morphs came from WC origins, simply being able to trace it back doesn't ensure the animal isn't a het (which I know you understand).
Feel like I'm talking in circles and simply making it more confusing haha! *goes back to my hidebox*