Has this lady been reported? She sounds like one of those people who should NOT be a pet owner, imo.
However, I would worry about one of my doberman's getting hurt by her dog while trying to keep him away, or worse chasing him back to her propery, leaving yours, and hurting her dog. She may bring a case against you for your dogs coming onto her property..Sounds crazy I know, but there are some crazies out there.
Sounds like fighting fire with fire in this case could cause you more pain and heartache.