Is this an unhealthy sign?

My date took 10 days to respond just to plan for our first coffee meet. Seldomly she'd reply within a few hours, but more often she takes quite a long time. She isn't spilling the beans on anything that might be going on in her head. Also, she agreed for another date but one time when I asked her when she'd be comfortable with the date, she dodged the question.
Is this an unhealthy sign?
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