What does it mean when a girl sees you and turns around and walk away? Do you think there is a chance she might like me?

I wanted to talk to her but she saw me and kept walking, I followed to try to talk to her but she just didn't stop, so I was like I shouldn't keep following anymore.
What does it mean when a girl sees you and turns around and walk away? Do you think there is a chance she might like me?
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