Is it messed up if I took this as a subtle flirtation at first?

I was asking this girl in my grade 12 math cl if she could let me borrow her notes for the unit we had just completed and she told me to meet her after her next cl and that she didn't have them with her or something. So I came to see her after cl and she said she was sorry but she had her notes at home (I don't think she was lying or anything, seemed pretty sincere/friendly and she just completed the test for the unit yesterday) anyways that's not the point.. She THEN said "yeah it's really long but it's still doable, 7 pages". And then I just said "what, the test?" without really thinking about it and there was just like a pause and she didn't say anything so I just went to ask someone else. Certainly a "that's what she said" moment anyways XD