My mother is currently road-testing my sister's Kindle. My sister wisely thought that the best way to win my mother to the right side was to loan it to her for a while. You can't convince someone that they desperately need something that they've never needed in the past, especially when they've never actually experienced it.
So now I'm sitting and waiting. The new Kindle Touch Wi-Fi is now available from Australia. If she loves the experience, I may purchase the new Touch and then give her my Kindle Keyboard.
The best home for a superceded Kindle is in the hands of another avid reader.