I met her for the first time the other day. I walked in and said, 'Hey you alright' and smiled, she just said 'hi' quietly and gave a slight smile, and didn't say a word until I introduced myself etc.
All throughout the day she didn't speak unless she was spoken to by me but was perfectly chatty with the others, so I don't think she was shy or anything.
She'd reply to what I said but then not go into further conversation.
I'm going to have to work with her more regularly but not looking forward to it tbh. I was perfectly nice all day and smiling, don't think I was rude at any point. Sometimes people just dislike you for irrational reasons. She hasn't known the other colleagues long but still was chatty with them.
Have you had people like this at work? Maybe I just need to be professional but nothing more