I have a German Sheppard named Ace. She is 11 months old; I have been training her everyday since 8 weeks old. I went overseas for a couple months, work orientated and unavoidable. Since I have gotten back, Ace has little desire to listen to my commands. She was extremely obedient before my absence and “wanted” to impress/do the tricks for me. But now she shows little desire and has low obedience in following my commands. She knows the tricks, but does not wish to respond to me when I give her commands. Is this normal? Is it just a “teenager” stage for German Sheppard’s or is there somewhere that I need to improve in my training or handling of her?