I returned to work after a baby and worked with a new colleague.
To begin with it was all roses. Then slowly her behaviour towards me became increasingly distant and unfriendly.
Then another colleague asked me if I knew what she had been saying about my competency to several other people.
Next outside of work she befriended a close but newish friend of mine, and the surrounding group of friends. She has increasingly become close with them quite quickly. I have said nothing to my friends about this.
She lied at work about something she had done, yet implied it was me. I spoke up and defended my position and it was made clear who caused the difficulty.
I don't trust and feel very uneasy around this person, but do not know how to deal with what is happening. I am thinking about changing my job to get away from this, but love my job.