If you are looking for a bike with 700c wheels for your wife, I assume you are looking for a road bike? If that's the case, you don't want that Diamondback-- That bike is definitely not a road bike. It's more like a heavy mountain bike.

Though it has far smaller wheels than 700c, this is the smallest road bike I can find: http://www.schwinnbike.com/usa/eng/P...-Midi-Fastback It has 23-inch standover height. Available at Perfomance Bike. http://www.performancebike.com/bikes...7_20000_400122