Why didn't she tell me she was in town?

I recently reconnected with this girl I had a crush on a long time ago, but nothing ever happened. we've seen each other 3 times now whenever she was in town (she lives really far away) and hooked up last time. this time though, I found out through Facebook that she was here at a bar with her friends, but didn't let me know. usually she would text me and we'd hang out, do you think it means anything that she didn't tell me this time?
Why didn't she tell me she was in town?
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