Actually I'd say that a 4.0 IN ONE YEAR isn't that impressive to adcomms, mostly because you'd taken fewer courses than someone who maintains that GPA for four years. Probably explains why she's going to Wayne State Law now instead of MichLaw or another top school.
Also, college is a time to distinguish yourself in other, non-academic ways. Like everyone's been say, she completely missed the point of college (either socially, academically, or w/r/t/ extra-curriculars).
She reminds me of those kids who do national spelling bee contests. They're so focused on something so narrow that they miss the point of everything else around them (not to mention their ticks and social awkwardness).