Yes but you rescued both of your dogs, rescued dogs are a kind of "as is no warranty" thing. Any bonuses like Ma'ii's herding ability or Josefina's possible abilities as a service dog are great, since we rescued them as aren't going to give the dog back if they didn't have those skills.
A dog from a breeder, bred for a certain purpose or job (whatever it might be) a dog that I would be paying hundreds, and in some cases, thousands of dollars for, the logical thing is that whether it's a herding dog that is afraid of livestock or a working dog that doesn't have drive, or a sporting dog who doesn't have the drive to retrieve, it would be silly to keep them.
The breeders are never mad Bout getting a puppy / dog back for that reason, they might try to see if there is anything the owner is doing or not doing, or suggest a professional to help with the issue ... But if nothing works then they would have no problem with the buyer sending the puppy or dog back.