A lady of Golden Rank notes should not be interested in those books.
So, Hewinia had set her sights on Ogg.
But she couldn't directly make requests to Ogg, as that would be equally suspicious.
Even with her status, being around someone of the lower class like Ogg was abnormal.
Thus, she needed a bit of a "persona."
Like being sloppy, clumsy, always late, and thus always sitting in the back row of the classroom.
Or being careless, having nothing but talent and disliking study, barely paying attention in class, preferring to do other things.
Like dozing off, daydreaming, and then "out of sheer boredom" starting a casual chat with the person next to her... who was Ogg.
For a poor boy like Ogg, having someone like Hewinia approach him was completely out of his depth.
Thus, they quickly became acquainted, and "friends."
It was during such interactions that Hewinia carelessly mentioned, "So boring, attending Arianna's class is worse than just staying in the library reading."