My nieces are 7. One will be eight in October, the other will be eight in January. They are not slouches. They do Tae Kwon Do, have been riding horses for a year now, have been doing gymnastics and dance for about 3 years, and swimming since they came to us at about a year old.
Last year I put the leashes of a couple of 4 month old puppies in their hands, and they actually pulled the one that is more athletic down.
At six, almost seven, the responsibility for a pet and the training and the management of a puppy is totally on the parents. My sister does not have a pet. She and her girls are very busy and they travel. So it is up to me to help them learn about owning a dog, training dogs, etc.
I have a bitch who is going to be 9 years old in August, and the girls have been walking her for about a year. She is very well-trained. And I am training the girls to work with her. Today, they were reading their books for school to her.
I am not sure what you mean by high energy, when it comes to your daughter. She has to have patience to work with a puppy at all. She has to be able to control herself. She has to be able to listen to your instructions and follow them. And for a puppy, she has to be able to take her hands away and let it sleep, and let it move at its own pace, and let it settle.
I am not saying that it is impossible. I have puppies out there with families with kids. But the puppy is the responsibility of the adults and not a pet only for the kids. At six, almost seven they are not ready for the responsibility of training and managing a GSD puppy.
Don't know any breeders in Southern California. If you find a good breeder, see if they have any trained bitches, that are retiring. You might be able to find a dog that your daughter can handle with supervision a little easier. A retired breeding dog is like a win-win situation, if she comes from a good breeder. The dog should be top quality, with training -- good for you, it can also be very good for the breeder and the dog.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC