Mina'sMommy -- I give her plenty of rest (and praise), I'm trying to keep to the schedule of: wake up; go for a walk outside (10 min), give her food, train with treats for a few minutes, play time, walk outside, train time, crate. ( about 1 hour) than 2 or 3 hours rest in her crate. Sometimes this goes perfect without mouthing but sometimes she's just too wild from the moment she wakes up --
As you probably know, my English is not so good, and maybe I misunderstand something, but in my eyes she gets far too little time outside, she must have some walks, that last much longer she need be out and read "dogs newspaper" and quiet experience the outside world, it is important for her socialization, and she will be so tired of using his nose, and her brain relaxes.
Where is the time when she just is with you in the house or garden, without any activity ???
I know that is usually "over there" to use these crates, which I probably never going to understand.

Do she lies asleep with the door open ??? she has so many hours in the crate. When the door is open so it's ok
I have never had all these problems as I see many here in the forum have. I have the last 30 years had 3 German shepherds - one at a time.
My puppy / dog are with me everywhere when I'm at home, it follows me, if it want, have a pillow or basket to put themselves in when they are tired, or just on the floor (or the couch).
They will not be shut away (crate) so they obey and follow the agenda. and they follow the leader (me).
As a puppy is the very first thing they learn is, they have to come when called - on command - get rid - things they have in the mouth, both things they learn, so they do it with joy and pride, after that I put requirements on how old they are, i and guides them in the right direction, always with love.
They are only away from me, if I have things where they can not join.
I think I'm saving myself for many disappointments, in this way, as I have always had such happy and obedient dogs. (What people tell me)
oh my god a long answer, just hope you can find some help in it.