how much physical and mental exercise does she get? (specifically beyond rough housing)?
If she is "very smart" i am thinking she needs more mental exercise. If you feed from a bowl i'd recommend stopping, food should be given (most of the time) via training sessions (a few short 3 minutes sessions even if that's all you can do) and food puzzles/toys.
I'd work on training calmness, some dogs need to learn this as they won't ever chill on their own. I'll try to get some links on that later today to explain exactly how to do this.
I'd work on structured exercise that isn't rough housing with the other dog.