Understanding womens behaviour?

There is a girl and she ignored me and says hello to everyone else even people Im with purposely

Then I bumped into her and she faced the other way looked at the wall and said hi to the next person past me

Then when we bump into each other again I said how are you and she puts on like really low soft girly voice says I'm good

Next time I bump into her say hello and she she just stared at me like she was choking or trying to ignore me and said hi at the last minute

Her behaviour help me understand?

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Understanding womens behaviour?
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