Hello again,
A bad day today. My Dad turned up and Poppy went crazy (barking, growling, lunging). She has met him a couple of times before. I had her behind a baby gate and tried to ignore her. I gave her treats when she wasn't barking. I then put on her a lead and she eventually let my Dad feed her treats. But she growled and barked when he got up to leave.
I feel demoralized and worry that she will never get over her fear aggression.