This is the frustrating thing. Auto sexing has to be culled for, like any other trait. If your source breeder kept these ambiguous chicks and used them as breeding stock, she's simply perpetuating the lack of auto sexing trait. I'd say please, please, whatever gender they turn out to be, please don't breed them. It's just doing a disservice to the breed.
That could be why I did not recognize them. I have had a few "Pat" but none like that.