Ghosted guidance?

I, 23M, got ghosted two weeks ago by a girl, 22F, I go to school with. I made her laugh all the time, and we talked during and after our bio class. She also had given body language signs she liked me, so l said screw it and asked her out. She hearted the message and said she would but was working so i said no problem. then she said we would set up a date. I responded with a follow-up date to which she replied she would be with family that day. I finally said F it and said, Let me know what works for you. She never responded again after that. She had viewed my story once since then, but the rest she has ignored.

I'm looking for some guidance.

1) I know she doesn't like me romantically, but why say yes then ghost. Especially when we had fun together?

2) Should I block her, or does that make me look emotional?

Ghosted guidance?
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