Personally, I don't blame her if she checks out for a few weeks. Or a semester.
Nor would I, but I'd also accept that she did so and failed a few classes.
Just like I did in the 90s. Although in my case it wasn't burn-out, but system shock at actually having to try to get good grades (Fairfax County PS then UVA).
Did that bombed first semester probably eliminate med school or an elite graduate program? Sure. But I probably wasn't cut out for either anyway. And it was a kick in the pants and got me to pay attention and work.