I've had gsd's for my whole life. Different lines, different temperaments, every one of them required(s) alot of exercise, but have been adaptable to my schedule.
Right now I have a 7 month old, (and I haven't had a puppy in 9 years!) an 11 yr old, and 2 aussies, one is 9, the other 7...This "demon seed" is the wildest one ever
) or maybe I'm getting to old for a puppy. She is out of slovakian border patrol lines and east german working..So I got what I asked for..
Anyhow,,my advice,, "shy" is not a good thing,,you don't want a gsd running away from/barking/ at people she should be familiar with. It sounds like you need to get her out and socialize her more with people..Take her to shopping centers, parks, hiking, wherever you can get her to and socialize her to as many situations/people/kids as you can. Enroll in an obedience/puppy class, great learning for BOTH of you.
They are a very smart breed, and while I DO many different things with all of my dogs, you don't necessarily 'have' to get them into something where they are working, unless of course you have a high drive working dog..
I certainly don't want to scare you, my sister has always had labs and now papillons,,she can't handle my gsd's,,she admits they are way to much for her, I love their versatility and loyalty so I will never be without one. They are an "aloof" breed, and it's great she loves other dogs! it sounds like she seems to settle well in the house another good thing!
Your girl is absolutely stunning,,with that coloring,,she looks to me to be a bicolor,,
Altho it sounds like you won't be able to take her with you to college in the fall,,again, I hate to say it, but if your parents aren't on board with taking good care of her while your gone, you may want to consider the best interest of the dog and find a good home for her or maybe someone who could foster her while your in college?? I can tell you right now, if you go to college, and your parents don't do 'right' by her, you will end up with more problems than you bargained for, and a very unhappy dog who will get herself into trouble....
It's a very tough situation for you and it certainly sounds like you love her to death, but hopefully you will do what's right for her. There are Florida GSD rescues as well that could help you out with finding the perfect home for her..
Good luck, and I don't envy your decision,,again, she is absolutely stunning
Diane