Please be careful with your GSD/Akita! Great news that she has calmed down as she matured and the origin of her behaviour may have been hormone related. But many dogs that have seemingly recovered from aggression have actually just had an unrecognised trigger removed from their lives. If and when they encounter the trigger again the owner is unprepared and totally shocked when the dog responds aggressively often with devastating results. If you think this doesn't apply to your dog remember that the trigger was never recognised and therefore you are unaware of it's existence. Prudent to bear in mind if nothing else?