We are in one department and don't work together. She has been working at the company for over 10 years and I'm a working student. I felt like she disliked me but I just ignored it. But over time I noticed that she would show her disdain for me more openly.
For instance when I arrived to the Christmas event of our department she smiled at the girl next to me from afar then looked at me and gave me a dirty look even though I didn't even directly look at her. I also noticed that she would start dressing more fashionably, check me out when I walked past her or looked over her shoulder at me as if she tried to provoke me. I also know that she gossips about me with her married work buddies who just want to get in her pants.
What is her problem? I never did anything to her.