My daughter is currently interviewing for GC masters programs. There are approximately 2000 applicants nationally each year and half receive interviews. From that half, half match to a program their first cycle. Industry roles pay more, but many start out in a clinical role. It is hard to match to a program straight from undergrad, but some do. There are other types of genetics masters programs that also lead to industry jobs and are much less competitive.
I actually think it’s a good idea to have the MBA if she really wants GC. It will give her a backup plan in the event she does not match the first time (half of all applicants have to apply 2-3 times). She can save money and continue to improve her genetic counseling volunteering, advocacy work, CV, etc while working. GC masters programs value work experience, regardless of the career (there are lots of transferable skills). They are also costly (about $150,000) and most do not have scholarships (a few do).
Good luck and best wishes!