if a girl accepted all of your request to meet up, ditched her friends to meet you, but is extremely shy, and since I dont have my balls in place yet im also 'shy', but we connected with each other, what can you take from this:

I only text her to meet up, she accepted 4/6 meet up requests, the other 2 she gave a 4~5 line text why she could not come (my father is waiting for me bla bla), most times we met up was 1 hour or so before a class to grab lunch or study together and 2 classes we sit together (she actually moved to sit next to me in one of them!), we joke around A LOT, tease, banter you name it

thing is, yesterday was the first time I asked for a 'big date', no 1 hour lunch but to grab a coffee at night time, she said she couldnt that she had a concert bla bla, I asked what she played she replied saying what it was and I made a inside joke that was a question but not really (didnt add the ? ), she got the text 4 hours later (whatsapp lets u check this) and read it 2 hours after that to which she did not reply at all

So my question is: If a girl replies almost instantly to all of your texts (she usually takes 1 min or 2 to reply while I take from 10~couple of hours) except the exception I said above, meets up alone with you but doesnt give big IOIs, shes shy and pretty sure virgin too (nerdy shy girl, my type), but when I texted her something besides logistics she in this case didnt reply at all (and she did text me first once asking a random ass question 2 days ago!) what can you guys take from this?