She doesn't like my Facebook posts?

This is a shy girl who has a crush on me. We talk to each other from time to time and I posted a pretty good and funny status. On Facebook, she's actually predictable when she likes people's posts. I'm sure if someone else posted what I did, she would have liked it. I don't know why she avoids liking my stuff though. Does she think I would look into her liking it and overanalyze it?
She doesn't like my Facebook posts?
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