M17 (me) F17. Help?

Never done anything like this before, feel a bit weird and I should know this myself. However, me and this girl hit it off at a recent party. Yet, since she’s been slow with replies and not saying much. I’m confused as in the morning just after she was frequent with replies and asking loads. Before the event we had a little bit of contact but were never too close. Just wondering what I should do, a little clueless in this as I feel every relationship opportunity that comes to me ends with them ghosting. Thanks