I just went through that whole quest and never saw that prompt. What have you done on this route so far? Let's start from there.
Which did you do first? Go to the library and get the book or go to Miss Bissette and ask about tutoring?
I had the book first, because I played v21.0.0-wip.4468.
Explain what steps of this task you have taken so far. Also, the task order shouldn't be much different than this video I have found on YouTube with a 30 second search of your task:
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Even though it's from v0.20.1, it should be similar.