Get her a mini. I love mine, and have switched over to it from my main Windows PC (which is no slouch mind you - 2.25 Barton, gig of RAM, 6800GT, awesome HD setup). It makes a great daily use machine, and OSX is much more pleasant to use than Windows from what I've experienced so far. However, you do need to add memory to the base config. I'm running a 1.25 G4, combo drive, 40 gig HD (came as 5400 RPM), and today added a gig of RAM to it along with a 160 gig external HD. The system is quiet, reliable, and actually performs outstanding thanks to OSXs caching. I'd have her get the base mini with 512 RAM, a decent Dell (or other) LCD, and an Apple keyboard combined with some decent 3rd party multi button mouse. She'll want the Apple keyboard if only for the convenience vs. remapped Windows keys (I run a Microsoft Wireless Desktop Elite set, and I don't mind the remapped keys, but I can see how an older lady wouldn't like that). It's a reasonably priced machine, with a full load of useful software, a lack of viruses and spyware, and an OK warranty. Just fine for her.