Does he mean major - or taking AP credit?
She should take the classes / majors of interest - and not discard a course of interest.
But if he means repeat it in college, even if she can get credit, for STEM majors to repeat STEM is often a good idea.
My son did a student panel at Colorado School of Mines - and they (the students) recommended this. He didn’t listen and had to withdraw.
Best of luck to your student. But she needs to pursue the paths that she’s interested in…period, end of story.
Good luck.