From everything I've heard, Rhodes Cars are pretty problematical to own. They're heavy, they have poor components, and they break often. You could probably do a search and find some harrowing tales. I'd recommend getting a trike for your wife instead. If you have no particular problem balancing, you may not need the extra wheel and a less expensive 2-wheel bent might work. In fact, the bottom end, such as an EZ-1, will not only be "less expensive" but will have a steel frame and strong 20" wheels.