WHo are you training with and what kind of classes?
Have they got recommendations?
You may want to start a different training like flyball or herding or..... if your basic obedience classes are no longer challenging her.
How many miles of OFF leash exercise is she getting about every other day?
You able to pack her into the car to visit friends and their dogs for fun socialization activites to mentally and physically engage her?
She sounds bored. She sounds frustrated. And she may now be starting up with a neurotic behavior that will be very hard (expensive) to break if you aren't able to be proactive and change/challenge her life for the next year or so.
BTW, my dogs can be good in the crate for over 8 hours if needed so it's not the TIME element that is the issue.
This is one of the circumstances that can come up in our breed and why I don't actually recommend them for most people. It CAN be much harder. They CAN need alot more from us than many other breeds.
We don't have a trainer, I just do generally basic exercises with her myself. Her training was halted when she started having seizures and as she was starting to be medicated-working with her was more frustrating, as the drugs had changed her a little. I let her "Settle in", and changed medications. I decided to just be patient, and it is starting to pay off (she is very close to how she used to be personality wise).
Some obedience we are working on - longer heels, (fancy, the flashy kind where she looks at me, lol), running heel, long down stay, recall from a distance, all of the above with distractions, tricks, etc. Her reward is to chase and retrieve a tug. It gets her running a lot.
Also, she is turning 2 around...Feb-April (not sure of bday), so I have been sitting on my hands and letting her grow up before putting her through some wear and tear.
I have a lot of questions as far as doing some sort of sport with her. She seems perfectly fine, and I have had more than one vet give me the green light. I work weekends, so finding a class may be difficult. I have taken agility classes before with my other dog, but I will have to wait until August
She is getting bare minimum 1 mile a day. I mean I'm tired after work and I still take her one mile. Usually 2 miles at least 3x a week. She is about 2 years old, and I am strongly considering starting to jog with her. 4-5x a week is 1/2 mile warm up with play/obed. at the park (15-45min at least), plus 1 more mile.
I agree she is bored and frustrated. I think she is just maturing into a typical GSD and little walks with some playtime and obedience are just not going to cut it anymore.
ALSO, there is a side of my house that could be easily turned into a dog run. Should I try this? I have roommates...who are OK with this, but NOT leaving her in the house!