If she earns an AP 5 and finds the college’s old calculus final exams easy, repeating regular calculus is likely to be a waste of time (though an honors calculus course with more emphasis on proofs and theory may be worthwhile).
Many math departments have a proof techniques course offered to sophomore-level math majors in preparation for proof and theory focused upper level math courses. These types of courses may be the more important preparation for upper level math courses than calculus.