Forward a copy of Florida law the breeder. She probably doesn't realize it is illegal to sell a six week old puppy in Florida.
Florida Consolidated Cruelty Statutes
Since a licensed veterinarian is required to certify the puppy healthy prior to its sale and vaccinate it, test it for parasites, etc, very likely the vet will check the law where the puppy is to be sold and refuse to certify the puppy anyway.