This is essentially what teachers are dealing with every day, across the majority of their students, for every subject where its even remotely possible to use AI.
I think given time educators will adapt. Unless they get burnt out first. She could also just not give a shit and they let go on to be some college professor's problem, who could also not give a shit, and then they become our problem when they enter the workforce.
If that is not enough, we may have to stop grading take-home papers. Which is a good idea anyway.
Or, do what my kids' school did for some classes. Instead of teaching in class and then assigning homework, the homework will be reading a text book and classroom time will be spent writing essays by hand, doing exercises, answering questions, etc...
I think that obvious solution is for them to write those essays in school.