Has she taken a non-AP bio class and no physics at all? If so, I’d recommend she take physics.
Admissions chances aside, since it’s so crucial to understand the fundamentals, many bio majors repeat introductory biology even if they’ve passed the AP test. Most bio majors are also required to take physics. That can be a difficult class and it really does help to have prior exposure to the material.
I took honors chem, bio, and physics in HS, but not APs. That prepared me very well for my bio major. I’ve taught plenty of bio majors who were well-prepared by their AP bio classes, and plenty who were not, so it varies greatly by individual.