I also agree with the above,,,You have phsyical possession of the dog, yet the "ownership" of the dog is in the breeders name. Legally that dog is still hers no matter what.
In fact, you could have paid her a million bucks and if the papers are still in her name, I'd think she still legally owns that dog.
Who would be paying for dog show entries? You or the breeder?
I think your best bet is to get a hold of that contract pronto and read it,,did you sign a contract?
diane