Wait, how did she attend uni lectures? Isn't she a highschool student as well?
i think the implications is it was post-loop.
she had looped enough to gain (at least) uni-level knowledge and attend through unofficial means
it's most likely to escape the loop. however, enough time has passed since she stopped trying, and enough has passed that she even forgot she ever tried
@Artimid :
Honestly, studying might be the one true way to pass the time. Just absorb and take in all knowledge so if the loop ever DOES end you are basically free to enjoy life. Become a master of all chemistry, all biology, all programming languages, etc. Every day rewrite the history of the world so constantly keep it fresh.
That's something I really liked about Groundhog day. He basically mastered all skills that he had access to master. You could basically become Dr. Who given enough time and no interruptions.
firstly, science need time to progress (ie: you won't be able to manufacture heavy machine, develop most medicine that matters -due to the time needed for body to react-, or observe slow-reacting chemicals in a day) the only field that could theoretically expand without progression of time is probably math. the other need experiment and hence time to study. more so if you're alone.
secondly, most likely you'll forgot most of what you learned about one subject before mastering the other, even professors forgot the basic from time to time unless it's related to what they're doing now. and doing all that without a note? good luck.
thirdly, like my reply to previous post, she probably did tried (reasonably). however, she looped enough to accept that there's no way out. if mastering everything is even theoretically possible, you probably snapped way before you're near to achieve that