Where are you located that the closest breeder that meets your needs is 19 hours away? It's really not like you're looking for anything "special," certain lines, certain work ability, and I don't think you should have to look 19 hours away to find a reputable breeder that can provide you with that.
The problem with her evaluating her dogs and saying they have calm demeanor, without testing them, is that many dogs have a calm demeanor around the home, or around the places they know. The reason we trial/show dogs is to test them in areas where things are new, things are loud, things are stressful.
My dog doesn't come from the best of breeders, not someone that works or trials their dogs. I got super lucky, he has amazing drive and is very well balanced. I didn't think I'd get into trialing/obedience training, but I did and now two years later we're trying to get as many titles as we can. This next time around (hopefully a few months from now) I'm going to a breeder that works her dogs, has proven her dogs, and someone where I know I'll have a better chance of having a dog more like the one I currently have.