Girls, She avoiding me for a reason?

I had a moment with a girl I like when I told her about me feelings to her. She rejected me friendly and told me she wants to be good friends. At first its was painful, but I accepted that in my mind. But after that she completely avoiding me, everywhere (do not contact with me via messages, trying to leave places when she sees me and etc.) Can you girls explain me what does it mean? She hated me all that time? She had some feelings to me but doesn't want a relationship? Or what?
Girls, She avoiding me for a reason?
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