I don't have any experience with breeding, but I have read that you should wait until the dog is 2 years old. And that makes sense to me - its probably better if the mother was fully grown and mature enough to take care of her puppies. But again, I'm not an expert - it just seems like common sense to wait. To me, this breeder doesn't sound all that responsible if he/she wants to breed Haley Emma right away - she's still a puppy herself. Hopefully someone else can provide you with some reading material that you could show the breeder. I wonder if there's some health risks involved with breeding so young? Best of luck to you!