Do you work with a mean girl?

In my last job, I worked with a mean girl. I didn’t know she was a mean girl until I unwittingly did something she didn’t like. I then noticed that at every chance she would try to embarrass me or diminish my work in front of our boss and others. She also talked smack behind my back and turned people I barely knew against me (I know, it’s embarrassing to even write it, but it describes what happened). I even caught this girl going through my desk. She could have had a legitimite reason, but I could tell from her face that she had been “caught” doing something wrong. My life at work was a nightmare and it didn’t end until someone new joined the team that she hated even more. I decided to keep my enemy close and get on this girl’s good side. It’s completely superficial – I would never lift one finger to help her or advance her career and in fact, if I can I try to let people know the truth about her. My real friends think I’m crazy, but I felt like I had no choice and that this was the only way to save my career and my reputation at that company. Have you ever been in this situation? What did you do? .