I would look at the puppy lemon laws for your State. Just google them and they will come up.
What does your contract and or bill of sale say in respects to breeding rights? No breeder I know will sell a puppy without a contract. And it is very common that AKC breeders will withhold registration paperwork until proof of neutering.
Some things that you can do. Contact the AKC and see if she is a breeder of merit, and or if there have been complaints lodged against her. Contact the National Breed club
www.ytca.org to see if she is a breeder member. And then ask if she is a member in good standing.
THis here is from Rose Hansons purchase sale agreement:
All puppies are sold as pets with limited registation, akc papers will be held back until purchaser provides Rose Hanson with proof of spay or neuter cetificate from the Vet. Spay and Neuter contract may be attached So if you signed this well you are the lawyer, to my simple mind that means you agreed to the terms as clearly stated above. In terms of breeding any dog it is truly something you do really need to research prior to jumping into this activity. Also please note that you will not be able to register this litter unless and until you get a written agreement with this breeder, that this puppy can be used for breeding, then she will fill out the paperwork for open registration.