She doesn't like mice. She doesn't like touch screen. She can work with text, though, and she's fine with some light markup, because it's not much different than doing the same on paper: you make things bold, or slanted, or use larger letters, bullet points, etc.
Linking? Linking's even easier, because [[anchor][text]] is much more convenient than drawing a huge arrow, and work accross documents, too, while arrows are confined to a single page, usually.

