I wouldn't be too upset at the feedstore, as this is what feedstore sell. Production oriented birds. Hatchery stock and sometimes, local stock, on occasion. It is what it is.
If she's healthy and lays lots of eggs for you? It's all good, That's what such birds do well, in most cases. Represent the true nature of the breed claimed to be? Not so much. It depends on what you want out of your birds. I'm a breeder who strives to breed high quality birds to the Standard. That's my desire, but may not be your goal in keeping a few backyard egg layers.