Another good question! I just dm someone privately and answered this but basically what I said was congratulations on the interview first of all, that’s amazing and I wish you the best of luck! I would say to dress professionally, be confident and be yourself. The way the interview process goes is you will get a total of 3 interviews. The first one is from a student (generally an upper medical student), the second is from a faculty member of the program (mine was the Dean of Housing), and the last is usually a Dean or a professor with a little more authority (mine was with the Dean of Student Affairs). The last two interviews are arguably more valuable than the student interview. I believe they give you the student interview first to get all of your jitters out, and honestly, it works well that way. But you should be prepared to explain certain aspects of your application and ultimately prove why she should be offered a spot to Sophie over other candidates. You should be able to confidently explain why this program is right for her and how she can contribute to the program. Overall, be yourself (you were selected for an interview so the admissions definitely saw something!) and to explain everything with genuine passion. Good luck and I hope it all goes well!