We did our best in evaluating, even read many posts by this breeder here. She is very knowledgeable, thoughtful and intelligent and we respected her. That is why we do not want to out her here.
There were life reasons why the c-section was done that we understood, even though we disapprove.
Since it was c-section, they all were born the same time, so the much smaller size is anyone's guess, perhaps the conception date?
I say runt only to describe what is clearly a much smaller dog.
When we got home we learned her eating habits were odd. She grabbed all she could fit in her mouth and find a quiet space to eat alone. We think she had to do that because the much larger pups must have harassed her. They certainly did while we visited.
She is going directly to a new home, found by the breeder. We have a contract, and even with all of the lies and deceit we are honest people. Except for the contract we would have contacted brat.
We do not know what our future holds in respect to a furry friend. Now is not the time to decide anything, but the idea of an older dog is possible.
Again, We thank everyone for the tips and comments. This is a powerful forum.