I recommend this author: ReaperRain. In particular, her 'TESIV: Oblivion' stories

Gold, Black, Red (rated M),

Unfortunately Enthralled (rated T), and

Anathema (rated T).

This author is good. She is really good. She's the kind of slash writer who can (and, in 'Unfortunately Enthralled', does) take ten chapters to get to a first kiss, and yet keep you glued to the screen the whole time.

Characterisation, tension, drama, comedy, it's all there. She also has the gift of not focusing solely on the main romantic couple, making the romance part of a bigger picture. You know, interesting.

Hope it helps your friend develop her skills.