Believe me, when you have to work with someone you don't like, it makes the job really intolerable. I was so excited to move to teach in middle school, and to have an assistant to work with, and now in my 3rd year there, I can't wait to get out. When you work with someone who does whatever they can to make you miserable, or to undermine you, it just makes work really unpleasant.

I really hope you can stay in the new area and avoid the other area. Nothing is worse than getting up and hating the thought of having to work with certain people all day. It's depressing as all get out.