We always took her parents wish for her to marry and take the family business as wrong because, well, she doesn't want it, obviously, but thinking about the story as a whole, I would argue it's also wrong because perhaps she's just not suitable for it?
The entire story we've seem that although she's not dumb and mostly lack motivation she doesn't really care about higher education, but again and again we see her getting around whatever situation is thrown at her her, even if she has to be scummy about it.
Hell just look at this chapter, she didn't just have a backup college in case she failed, she already had a entire plan to convince her parents too, so I can't help but feel Makino real talent is with solving problems, even if she has to bend or even break the rules to do it, a lot of people make a career out of that by working for powerful people.
Maybe she could be a lawyer? She's already scum anyway