Software to Assist in Recovering from a Stroke?

jshaw001 asks: "My mother recently suffered a stroke. She is not that old, only 55, and she is out of the hospital now but still has a long road to recovery. The doctors said she should be able to recover, but it's up to how hard she works at it. She is an accountant, so numbers and being able to memorize lots of stuff is very important. In short, her memory is very important. I'm in college right now, and my father has to work all day so we can't be there to help her out with her memory exercises all the time. I was wondering if anyone knows of good software I can get for her to help her with her memory, reasoning, and typing. Free software, shareware, commercial code -- cost is not a factor. Games are also a plus. Please note that we are limited to Windows software. Any other advice on things I can use to help her, or your experiences, are welcomed. Thank you."