<human>: I have been talking to this girl and we have an easy time making conversations (which end up being about school most of the time). I have been wanting to ask her out on a date for ice cream or something. (I was waiting until after AP exams because I knew she and I wouldn't have much time before then) but this event stood out to me:

So the teacher didn't show up to class and the substitute did not know anything on the subject so i went up to the front and started "teaching". It was great I was telling the teacher's jokes and impersonating him and everyone was having a good time laughing and commenting on how accurate I was at impersonating. But through the 40 minutes the girl did not laugh or even give a big smile. She was more concerned about the work we were supposed to do. (I was actually teaching and doing the work so it wasn't like she wasn't paying attention).

I don't know how to read this, is she (we are both really smart) too concerned about the schoolwork or does she not find me funny?

I think it is clear she does not like me like I like her but I think that could change if I asked her out.

Thanks for reading, opinions?

Give me the gist of the text in a nutshell
<bot>: I do something really fun one day in class, she doesn't react. I don't know if she doesn't like me or if she could change her mind if I asked her out.