Some seven years later, my fiance learned that their stray was actually likely a purebred Norwegian Forest Cat. Not a common find!
He matches the description perfectly, from the razor blade claws to the being giant.
If she's tiny but has a lot of the traits nonetheless, she might be a mix...
There are two "pure" white coat genes:
Dominant White (or "W")
"Dominant" means this gene will take precedence in being inherited. This gene is interlinked with blue, orange, or "odd" eyes. I could be wrong, but I believe "odd" eyes often refers to the albino red sheen, which are not always...