labloverKEB
I know just what you mean about your dog being aggresive, our two Schnauzers don't like other dogs either. Maybe Sadie is being protective toward you at that time. The only thing I could suggest is maybe go to an obedience class with Sadie, maybe you could check to see if there is one in your area.
Since we know our dogs are that way, we just are very careful where we go with them and try to stay away from other dogs.