
Frankly her pedigree may be a complete work of fiction. If she were able to be Kennel Club registered you can bet she would have been, as people still value KC registrarion over any other kind of documents.
I would join the breed club and attend some of their events. You never know you may becoem so involved and fascinated in the breed that in a few years tiem you may decide to buy a well bred puppy to show or work, and if good enough breed from at a later date if the responsibility is something you care to assume.
Many breeders have or start off with a rescue dog, and then go on from there.