Twenty-three years ago, I (being the designated alpha-geek), was volunteered for the job of teaching my mother-in-law how to use her Mac SE-FD/HD.
I distinctly remember trying to explain that she was moving the viewing window over the document. She didn't get the disconnect between the view and the document (she had just mastered using the mouse at all). I really think she'd "get" the new "natural" method, even 23 years later (she was 60, iirc, when the SE arrived at her birthday party).
Though I can't see a need for it myself, the "show all files" Finder option might help her too. Always had the darnest time with the concept of folders. this way, the finder worries about making the "folders", without actually showing any hierarcy.
For me, I intellectually understand the reason for the new natural scrolling, but I do end up the wrong way at times. I'm betting I'll get used to it...soon... :-/
It'll be hard breaking a habit that started around 1984... 😉