In particular - though maybe this is just recency bias with respect to what she's thought about most frequently - the couple-sex-mix frequencies seem most likely to have an explanation that is in Wikipedia, if events in this world have explanations at all. Economics is complicated and changes rapidly as lots of agents compete for money. Sexual attraction moves more slowly over evolutionary time and is easier to study.
Also, the pattern of romantic couplings generates a huge fraction of all the goodness/fun/utility in Civilization, so even here somebody should be studying that? But no, you could say the same thing or even more so about everybody's genomes, and here that is considered a bad thing to try to optimize. Well, either Wikipedia will have something to say about it, or there will be no articles in Wikipedia on sexuality; and later Isabella will explain that one time a scientist wondered out loud what makes two people fall in love, and then everybody on that continent murdered each other, after which nobody ever asked the question again. Actually, no, if that scenario is true, the whole story will be on Wikipedia! Because Earth doesn't infohazards!