I've had a great little TT since he was 14 months old. He was traumitised as a young dog and is still frightened of strangers but he has lots of great friends (people and dogs), including Homecare staff. He has a little yard with a gate that he uses sometimes. I'm always nearby. However a Homecare cleaner came through the gate twice without letting me know and she accused the dog of threatening her and would report him. The Supervisor came next day to see this 'dangerous dog', no problem. But I'm afraid this lady will still come in without telling me - he hates her and he night nip her although he's never bitten anyone before. Any advice?