Calc BC is more likely to get credit at a private university than Stats.
The workload in stats is likely to be lighter, but that’s teacher dependant.
For admissions it will make no difference.
For college, she will need calc 2 for engineering and stats for business. And depending on the university, she may need both regardless of engineering vs business Personally, I would opt for BC if she can handle the total workload on top of applications.