@Suben I suspect there's more going on in college that we're not shown. Possibly she's teetering on the edge of being expelled, if not already, but not telling her parents.
I would be concerned that a magical Mein Kampf was among these books, Das Kapital, or something along those lines. A 5-year-old may have a huge information acquisition capacity, but no capacity to discern good from evil.
Azumanga aged incredibly well.
BTW, I realized only now that Tomo had a canonical family name. I think at this point (if we allow the Aida-Inoue hypothesis), no characters are left with no last names. Some have no given names though.