Why would a woman be overly passive aggressive with a guy she literally just saw?

There was a woman who was my neighbor who the moment she saw my physical she downright started acting very hostile & bitchy (passively) & constantly gossiping about everything I was doing & saying

Just being very negative anytime I was around

I never showed interest or even tried to talk to her

Why would a woman be overly passive aggressive with a guy she literally just saw?
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