I would go one step farther than you already have. Call the non emergency police number or go into your local station and file a report. You need to get something on paper just in case something REALLY bad happens. And there is no excuse for the owner. Sad it will be the dog that gets the blame. I have had several LARGE GSDs, trained them correctly, and never had one bit of a problem. I am having 1000000% more trouble training up Angel and she is only 10lbs. Also, depending on your city, you can file a small claims case for $ as she is preventing you from the normal enjoyment of your home. Sounds kinna crazy but at this point you need to do ANYTHING to make her see this is a serious problem.
Good luck and STAY SAFE!!!!!!!!!!
__________________ Angel is a Coton de Tulear. Now she has a Papillon sister to play with named Margaux  |