I almost forgot- Tender in Birmingham is loaded with Jimmy Choo! That would be a great place for you to go. Birmingham is a quaint town, with nice boutiques and cafes/restaurants. It is also about 5 minutes from Somerset. I would even try to convince your husband to take you into Birmingham for late Saturday afternoon shopping (go to Tender), and then go to dinner at one of the many fantastic restaurants in Birmingham (PM me and I can give you a few! I have lived here my whole life)!
The casino is in downtown Detroit and is really fabulous! Downtown Detroit is about 20 minutes drive on the expressway from Birmingham and Troy. Although I bet the Casino will have shuttles to Somerset- so you can easily get to shopping!