Margaret Stohl wrote Beautiful DarknessBeautiful Darkness has genre FantasyFantasy has examples: The Looking Glass Wars. The Looking Glass Wars is written by Frank Beddor
[Human]: Could you recommend anything by Margaret Stohl? [Assistant]: I believe she wrote the book Beautiful Darkness. Have you heard of it? [Human]: No, I haven't.  What genre is that? [Assistant]: It's a romance novel. [Human]: Would it qualify as Young Adult Fiction or Fantasy, as well? 
If we're comparing it to The Hunger Games, then I'd say yes, it can be within these genre too.