She's an unknown, unproven female. Look, I have to tell you... I live in Ohio. There are SO many dogs on CL it's not funny. People BYBing and then putting a litter of 6 week old pups up for sale. I'm on my 4th shepherd. I'm just now starting in to work to title a dog. It's not cheap to do even that. You've got to put in a lot of time and effort, and I didn't have the time before. This is a wonderful breed that's been degraded by people breeding that don't know what they're doing. Just titling the dog isn't all of it, either. You have to know how to match pedigrees. I spent a LOT of money on this bitch I bought many years ago. Her parent were both titled. The breeder imported dogs from Germany that were already titled. BUT he didn't know what he was doing. He just put 2 titled dogs together. My bitch had serious mental problems. She attacked people randomly. I put hundreds and hundreds of dollars into trainers and behaviorist, but it was genetic. Nothing to do. There comes a time when you have to admit that you have a nice pet, but you don't know what you're doing when it comes to breeding. You don't want to produce a litter of fearful pups, do you? You don't want to be responsible for people potentially being harmed or having to put those pups down, do you? You're just starting out learning about this breed. If you don't even know about AKC papers, you are NOT ready to even think about breeding. Please spay your girl. Then work with her, learn the ropes, etc. Good breeders don't breed for money. They certainly don't breed dogs they picked up off CL. I am begging you. If you want to be a breeder someday because of your love of the breed then spend the next two years learning about training, titling, the breed, the breed history, how to read pedigrees, how to match pedigrees for breeding and THEN buy a foundation female and think about breeding. Just please spay this female you have. No good will come of breeding her. Find a mentor if it's something you're interested in.
Please go read the 'aggression' section of this forum. Most of those dogs are genetically messed up. You need to really know what the people and dogs have to go through. It's not fun, and it's not cheap. Some of those dogs end up paying with their life because of an irresponsible breeder. You've been told, so you can't plead ignorance.