Oh, Sabriel! I loved that trilogy - I should reread, it's been a long time.

For me, the source material has to have something MISSING, something that I really wanted to see, in order for me to get really fannish about it.

This must be it. Not that I never wanted more from books, obviously, but I've usually just finished them quickly and moved on to others if I wasn't satisfied by what I was reading. Maybe that had an effect too - I have to sit down for a set time to finish movies and tv, so more time to pay attention and get attached to wanting something.

I hope you like the story.