“If your daughter is applying to that handful of hyper-selective places where missing out on AP Physics, when it’s offered at her high school, might indeed be a liability, then the sub-B grade that she earned in her initial physics class will probably hurt her more than having one fewer notch on her AP belt.”
Bingo! Clearly the kid did NOT take to Physics the first go around, so sticking her in the class at an AP level is not going to be a recipe for academic success (or family harmony).