Difficult people

I thought the unpleasantness at work was over. I was wrong. I had underestimated how tenatious some people are. The main source of my frustration has sent me some horribly catty emails over the last few days, and is now threatening other work that I do because she happens to be friendly with my boss. I hate petty people! I do, however, trust my boss. She is sensible. I doubt she will let this affect our circumstances. Still, it is frustrating that some people can be so set on making others lives difficult!