Hmm. There are a few things that would have me at least asking some more questions. Especially on her References page, the last reference looks like it is talking about the breeder walking the owner through the birth of some puppies... There could be a totally logical explanation, but it seems a little suspect to me.
Other than that, looks like she only has 2 champions, one from Sands and one from Diamond, and one other dog that hasn't been finished yet from Serenity. I'm not sure if there are other dogs she is breeding, too, but if there are only one or two girls she's breeding I'm surprised at how many puppy references there are.
And this probably is going to sound rude, but the girl on her available puppy page...something just doesn't look quite right about her face, structurally. Maybe it's just a strange picture. The boy looks very cute, but he looks younger.
All in all, I'd definitely be doing some more digging (as you are...)