You realize I have no idea what this is? So, pulling something out of my ass...

It's a book fandom set in a world with fairies. The dark that is rising is, in fact trolls trying to take over their kingdom. The main character is a fiesty woman who's quick with a knife and is trying to infiltrate the troll camp with the help of her side kick, a glow worm.

And now this sounds like a Disney movie. :P

Now, for you, did you ever watch Queer as Folk? Or, oh! Card Captor Sakura? (wait, you were in anime, so probably). Or Outlander, the book series?