Time for some tough love.
Not for your D- but for you, OP.
The world isn’t running out of calculus. The world isn’t running out of robust intellectual engagement and challenges. The world isn’t running out of rich academic experiences.
If your D has internalized that succeeding in this environment is her “ride or die” it is going to be hard to persuade her that she will likely be happier and more successful elsewhere. But there’s nothing you’ve written that sounds at all compelling about keeping her where she is.
I meet and work with a lot of “early stage career professionals” . Many of my colleagues (so my age and folks in their 50’s) have chewed over with me the stark differences between the current cohort and those from even ten years ago (not so long in historic terms). Some of these differences are admirable- their total comfort with technology, learning new and disruptive things, open-ness to other cultures, ability to challenge authority and ask why. Some of these differences are scary- much less ability to “self regulate” as early childhood educators describe challenging 4 year olds.
In the old days of working in an office, you’d see a junior employee still at her desk at 8 pm looking frustrated and exhausted and you could casually say “hey, get your coat, it’s quitting time” and during the elevator ride downstairs, kindly poke around and get a feel for why. And then figure out the right kind of support.
You can’t really do that on Zoom, or with limited time in the office. And for the super duper “I’ve been an over-achiever my entire life and I don’t know how to stop” personalities, it’s exceptionally challenging to figure out who is in over their head, and who is just tired because their college roommate had a birthday party the night before and they were up late.
But if your D is showing signs of not self-regulating (i.e. “I’m going to get a C on the next quiz and I’m OK with that because I need my sleep more than I need another two hours of studying”) then maybe it’s time for you to intervene more aggressively. If tutoring isn’t helping- and if this class is really bringing her down emotionally and socially- ask why this is so important right now.
The most intellectual kid I know from last year’s seniors is at Wittenberg. An almost peer in terms of academic curiosity and robust intellectual challenge is at SUNY Binghamton. His sibling- even more gifted- went to Holy Cross.
There are brilliant kids everywhere, helping to edit a professor’s book, working in labs, presenting at conferences. You can’t make your D’s HS experience all about college admissions!!!