As I said in the other version of this chapter, I called it just as it is (and maybe a little worse).
Sadly, I don't see it ending soon, it feels like a long arc to follow. I could be wrong and Shirogane might do something to save her, but it seems hard. The best choice for the author now is to follow the course of events. For example, shinomya could make some merits to take the company by staying in Japan (of course like full on ice kaguya) she still wants miyuki to go to Stanford because she needs him to be considered worth by her family standards.
Of course all is hypotetic at this point, because the most probable outcome will be her showing her brother as inept to succeed on the company, therefore the family will not have other choice but to put all their hopes on her. This is convenient to her as a way to impose conditions.
Either way it goes, I would love to see a kaguya destroying everything from the inside