What if shes thinking right now of the fun time she had with you on your previous date with her and she cant wait until you ask her out again! I am sure that if you both had a really good time together then why not make it stretch a little bit longer. You want to build on the relationship like you are doing now.
I don't see any problem you asking her out again, ,,then again I hear about this '72'hr rule, which means it is good to wait a few days before asking her out again.
I say go for it bub!