Not really clear why you got a dog at all if she has to be isolated not only from the other people but other dogs?
Both house manners AND being with the other dogs is something ALL our dogs can learn. They are very intelligent and between the hours we can spend with them IN the house, hours of training and dog classes, hours of socialization plus possibly the crate training inside the home...............
If she will have to spend her life alone in the yard....... with no training or socialization to be raised normally, is there a chance you can contact the breeder to explain that you made a mistake and didn't realize everything involved in raising a dog properly? I know my breeder would take my dog back if I realized I had made a mistake.
Raising a dog is hard, takes tons of time and money with both the training, socialization and just normally day to day responsibilities. Better to fix the situation now when your pup is young rather then wait and end up with an older dog that can't be in the home, can't be around other dogs, and can't be trusted out in the world because I didn't have the time/experience/knowledge to raise my pup properly.
Have you read this stuff yet? Welcome to the GSD/FAQ's for the first time owner - German Shepherd Dog Forums
How far are you on this --> Top Training Expectations for Puppies
As well as ---> What is crate training (why put my puppy in a cage?)
What a normal day looks like for my puppy