Can speech recognition software help prevent RSI?

Sean's wife spends up to eight hours a day typing reports and he wonders which software works best. But speech recognition is already built into Windows

My wife can spend up to eight hours a day typing reports in Microsoft Word 2010 and due to RSI issues, is thinking about investing in some speech recognition software. There seems to be a huge diversity in the price of these, and we need to know how much we should spend and how reliable they are. She would also be interested in a portable version, which she could use on the go.

I've been on a few websites and I've identified the Dragon Naturally Speaking 13 Premium Wireless as a possible solution. We're running Windows 7 with the option to upgrade to Windows 10. Sean