Girl I started talking to on Tinder randomly stopped texting back on forth, advice needed. (I asked for her number and she gave it to me)

So, started using Tinder a couple of weeks ago, mostly for funzies. I got a match from a really pretty girl, and I started talking to her. It went really well. I told her I was going to be attending our college's back to school night, low and behold she was going to. (I was hosting a booth for my student org) She said she would stop by but never did. I saw her walk by ( at the time I wasn't 100%). I sent her one last message on tinder telling her to come by, didn't hear back till next day. She said she was too scared to meet, I asked her why and she said she is really shy around guys. We talked for a little bit, and I asked for her number. She gave it to me and we texted back and forth for a couple of hours. The conversation was going super well, she was using smileys, and was invested in the conversation. I then asked her, what she looks for in a guy. (The idea was to lead into a phone call -_-, cause I hate texting). She just randomly stopped talking to me. That was yesterday afternoon. Left her alone and still haven't heard from her. Advice? Everything was going very well from what I thought... seemed so random. Should I text her in a couple of days? I don't want to be needy, it just was so random. From hot to cold like that.
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