Janome has a line of great machines and they fit everyones pocket. It's also a great brand. I wouldn't part with mine for anything. I got mine at Fabric Art Shop in Lake City FL. Go on line to call them and see if they can ship you one of their cheaper models. You won't be disappointed.
Any of the cheaper stuff at WalMart will break down in no time at all and the repairs will cost more than just buying a new machine. If she truely shows a good amount of interest, make the investment of a Janome with one of their simple machines. They run smooth and are the simplest ones to use. Their manuals are easy to read with great pictures. Please let us know what you get and how well she receives it.