Mark -
Fashion Outlet Chicago in Rosemont is just a few minutes drive from the Westin and that should be able to keep her busy. There are a ton of great restaurants both within walking distance from the Westin as well as a short drive away. The hotel concierge would be happy to help you select ones to your liking. If I recall there are a couple of premium steakhouses within walking distance. Enjoy your visit and AXPONA!