My manager received an email accidentally from a HR representative, who had asked me to write an email detailing what type of treatment I was enduring in this toxic work environment.
The manager told me that she had seen the email and issued what I considered a subtle threat. She said that she gets satisfaction knowing that people who mess with her at work will be dealt with differently outside of work and there's nothing anyone can do.
She has form for being aggressive. When she found out someone else had complained about her she was saying things like I just want to throw something at somebody.
She is one of a group of bullies at work who "research" people every evening.
AIBU unreasonable to consider this a threat?