The brown spotting is called ticking. It is not considered a fault in the breed. If you would have gotten her from a reputable breeder, you would have had more insight as to the quality of her parentage. Do you know if her sire and dam have any health clearances? Neither clearances nor AKC registration is a guarantee of quality. Champions behind grandparents would be rather far back in the pedigree. Usually vets have no clue as to a show quality dog; if there is a breed club in your area, you might consider having one of the members look at your dog.
Slinky
Slinky