So sorry you're going through this...I know what that's like. I worked for a vet for a while (who, as I look back on it, was clearly an alcoholic) who always needed someone to bully for stress relief. Guess who. She was the owner of the practice and the only vet, so no HR...
I'm sorry. I know how stressful that is to constantly be waiting for the next attack,
Sending you a hug.