Mixed signals, what to do?

I faced pretty interesting case, I found a girl online, we talked nicely and found that we have much in common. However, she mentioned that relationship is not for her.

I decided to take a break and contacted her one month later. I was also recovered from my problems and it seems like she noticed that and started to flirt and tell me about her life. She even offered a date as soon as she comes back from semester abroad.

Last call was also sweet, she wished me good luck with my work and complimented my car and driving skills, even though I did not mention it, mb she saw the picture somewhere.

I assume the first encounter was simply test of my asseriveness and confidence? Otherwise I do not get why she would try to confuse me.

Mixed signals, what to do?
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