I would also tow it back and drive it as little as possible. This will minimize any further damage. It's not worth having your wife stuck on the highway for. I just drove that stretch between KC and St.Louis myself. Nobody does less than 75 mph so safety is a consideration here as well.
Good Luck.

95 Contour GL. Bought new. BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids. Looking for 15" alloy rims-PM me. 180,500km's so far.