My office has 12 employees, all of whom are women. Most of us get along pretty well, but there is one woman, Sandy, who doesn't get along with anyone. She is generally unpleasant and kind of nasty to everyone, but especially to me. She seems to have singled me out and all of our coworkers have noticed it.
Here are some examples of her behavior:

  1. She publicly disagrees with everything I say. If we are in a meeting and I have an idea, she tells me it won't work. But if someone else suggests the same thing, she's all over it.
  2. When she was having computer troubles, I suggested that she defrag her hard drive. She shot down my idea as useless and then tried everything else under the sun, unsuccessfully. When the IT finally came, he told her to defrag her hard drive. She never said another word to me about it, not even, "Sorry, you were right."
  3. She's in charge of ordering office supplies for the department. But every time I request something, she always "forgets" to order it. She doesn't "forget" anyone else's stuff.
  4. Every morning, when I walk past her desk, I say, "Good morning, Sandy." She ignores me. But I hear her muttering hello to everyone else.

She is not my supervisor so I don't feel like my job is in danger but I'm getting really frustrated. I've wracked my brain to figure out if there's anything I could have done to her to make her hate me so, but she's been like that with me since the day I started.

I'm not sure what to do. I want to confront her but I really want things to remain professional and cordial. Should I confront her anyway? Should I talk to my manager about it? Or should I just grin and bear it?

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