Hi Dexter, and welcome to the forum.
Agreed that what's done is done – but a mistake made in ignorance probably won't be repeated, once you know. I've been there/done that too, joining a pet forum after my partner and I got our first dog, our Shiba Inu, from an unethical source. And, well, learning what we did, and learning to grow up with our little hellion, changed our life.
If you're in it for the long haul, this forum will help you.
(That said, can I just make a quick gripe that it drives me batty that this breeder can't even spell Shiba Inu properly on her website?! "Sheba Ina" ...?! I know in the bigger scheme of things, there are greater offenses, but this is the kind of thing I would expect a stranger on the street to call this breed that I also care about, NOT someone who claims to know what they're doing as a "breeder"!)