Thank you very much.
What does the Rabbi advise me to do from an educational standpoint?
In my professional work, all the products are intellectual property, and thieves really bother me, also on a personal level. First, this is literally stealing the labor of others, and second, if the number of thieves grows, the whole market will collapse and everyone will lose from it. The thieves are leeches living off prices that other honest people pay, and in my eyes this is despicable behavior. Although in my youth I also downloaded movies, games, and software through torrents and the like, because I was less aware of the issue.
I want to demand of my daughter, just as I have learned to demand of myself, things that seem right to me, while still maintaining the clear distinction between Jewish law and what seems right to me for various reasons.

If you can borrow it from a library for a while, then it seems like a good idea actually to take it and keep it for a reasonable period of time, because borrowing from a library entitles the copyright holders of the book to royalties, and in addition, if demand for the book rises, then perhaps the library will buy another copy.

Tolginus, here there is harm to the library (you cause them to buy a book they were not supposed to buy, although one can debate this).

Avner, I suggest exactly what you wrote. Tell your daughter that it is improper, and perhaps even actually halakhically forbidden, to do this (and it is also forbidden legally). But halakhically there is no obligation to pay (I do not know regarding the law. Ask a lawyer). Present the various options to her and what you recommend, and she is the one who should decide.