In reply to Flinticus:
Hmm. Had a really good look through all the books I have (which are probably not very representative, being in large part mid-20th century). I still can't find anything which would be of particular interest to a teenager, save for the big photo books. When I look back, the ones that grabbed me most were the legends - Classic/Hard Rock, Big Ron's books; even Herzog on Annapurna. But then, we didn't have Nintendos, colour photography was invented specially for Extreme Rock and I was a weird little spod.
I think if you want to encourage your niece, it might be better to:
a) take her climbing outdoors
b) buy her a video
Sorry.
Martin