Well, you can't avoid it in this or the next version. The question about Lisa's learning is part of the game plan and if this question is not asked, something is wrong with the game progress.
Unfortunately, this game is constructed in such a way that we cannot choose a path and just stick to it. Different events are related to each other and if you leave them you will not be able to take the next step in the part that interests you.
I personally don't like it. I would prefer the option where I can only have three characters and skip the others.
PS
A very nice girl, by the way
View attachment 1350632