She wouldn’t be “wasting” them. In my view it’s all nice and dandy to have AP credits,
but College is usually much harder than HS. (with exceptions … Exeter I hear is harder than
most colleges). So placing out of some core classes throws you into the “deep end” into harder classes which some kids can and some cannot handle. I always recommend that if the kid have even the slightest doubt about his/her/theirs mastery of the material to NOT place out and take the college course instead - it’s better for the GPA and takes some pressure off.