How can you get even with a co-worker for snitching to the boss?

mzmarlo: How can you get even with a co-worker for snitching to the boss?
A co-worker snitched on me to the boss about something totally stupid and worthless, any ideas how I can get even with her?

Answers and Views:

Answer by Michael F
Now – that would be immature on your end don’t you think? And potentially job ending.

Now you know what she’s all about, be more wary.

Answer by shiprepairwoman
Be very polite, formal. Make sure she never has one bad thing to say about you. She will know you don’t like her but you aren’t required to like her only to work with her. Do that to your absolute best level. No personal information asked or given beyond have a nice weekend if asked a question about your personal life answer it with a short non informative answer and get back to work.
Most people care what people think of them but she can’t say you aren’t communicating about work or you are doing or saying anything wrong.
I have a coworker who claims she got in my office when I went to get coffee and took a plant off my file cabinet. She claims it should have been her plant since it was a start off a plant that had been near her desk 6 years ago. She didn’t ask and I don’t believe she went behind my back to do it. My office is locked but she has a key in case of emergency someone said she had my plant before I got there.
I am not willing to fight over a start off a plant and I already told my boss she can keep the plant but she lied about how she got it.
I don’t talk to her about personal things at all. She crashed her car this week and asked me to get the mail out before the mail man because she was renting a car to get home and had a headache so didn’t want to go to the mail box. I told her I would try and if I couldn’t I would get someone else to take the mail. I didn’t ask her anything about the accident, I don’t care about her, I try to avoid using the copy machine or faxing when she is there but won’t let it harm my job. I used to chat with her while waiting for a fax to go but now just watch the display on the machine with my back to her. She can’t complain but it is a company with only 4 women and I am the only other one on the same floor so she has nobody to tell anything to.