Originally Posted by Bluechip

I think she would be happy with the change to flat or sweptback bars but it's not a simple swapping out of handlebars and levers. I don't think Shimano road and mountain shifters are compatible with each other. So you might also have to replace the rear derailleur unless there is some sort of device that adjust the ratio of the cable pull. Would it be worth all the effort vs. buying a hybrid bike? I love to tinker so I might do it but I also love to buy more bikes. Tough decision. Good luck!