I interviewed with Michelle for last year's class, but I ultimately chose not to go to Ross.
Trust me, the interview is more to sell YOU on the idea of going to Ross than it is for you to convince them to let you in. You will watch a promotional video, and Michelle will answer any questions you may have. She lived on the island, as her husband is a Ross graduate, and I think she used to be the Housing director or something like that so she is pretty knowledgeable. Then she will go over your application with you, just to confirm everything and ask you some basic run-of-the-mill interview questions.
On a side note, her husband got a peds residency at Children's Hospital in Detroit after graduating from Ross, and then he went on to do a Hematology/Oncology fellowship and now he does bone marrow transplants out of the Karmanos Cancer Institute in Detroit. VERY cool stuff!