Hi Rose,
I normally don't post on this forum, but read your thread and it struck a chord with me. I am sorry you're having to deal with this at work.

I agree with everyone who's suggested keeping the journal - and keep the documentation off-site. There have been times I've documented issues with co-workers and one time with a supervisor. I not only wrote down what happened but what my reaction was to the situation. (In other words, what did I do in reply to the actions of the co-worker.) In one instance it saved my job. I had a co-worker throw me under the bus. She had purposely given me incorrect instructions and then told the boss I didn't know what I was doing. Unfortunately for her she had emailed the instructions and I had saved that email. When I told the boss I could show her the email the whole issue was dropped immediately.

I really hate documenting. I always feel guilty doing it. But it can be very important.