Photo forums are full of posts from people who have bought a DSLR and the results are worse than they were getting with their compact.
Honestly, if she’s really not going to learn the basics, don’t bother with a DSLR. All the elements of creativity in the picture taking process come with an understanding of the basics.
People often take a couple of great pictures, but aren’t sure how to replicate them, so frustration often sets in.
This book is great for beginners to digital:www.amazon.co.uk/Digital-Photography-Introduction-Tom-Ang/dp/
My partner refuses to read instruction manuals, never mind tutorials or introductory books – she has no patience whatsoever. She much prefers a decent compact.
However, if you fancy a DSLR yourself and fancy a Nikon, try these people:
http://www.graysofwestminster.co.uk
You can buy secondhand stuff with total confidence – they are a bit of a legend amongst Nikon fans.