Why she wouldn't shake my hand?

I was at a church gathering at a local park to have fun for the kids today. As I was leaving I was shaking everyone's hand, but when I got to this girl I extended my hand and she said bye, I held my hand for another second and she said bye again with kinda angry eyes. I shaked her hand before but this time I was surprise and embarrassed in front of others as she left my hand hanging. I never disrespected her at all to be treated this way.😏
Why she wouldnt shake my hand?
Why she wouldn't shake my hand?
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