My dog was recently attacked by a small offleash dog. We were able to keep anyone from getting hurt and it was mostly just noisy barking. Since the attack my usually friendly dog has been extremely leash aggressive to any dog passing on the street. Barking and growling, extremely over reacting. I have also avoided the dog park she usually enjoys bc I am afraid of how she will react. How can I help her get back to her confident friendly, less traumatized self?