The label YA actually means nothing except that the protagonists, or some of them, are young. Publishers like it because it is a secure marketing niche. But the cost of security is exclusion from literary consideration.
Ursula K. Le GuinHate gets going, it goes round, it gets older and tighter and older and tighter, until it holds a person inside it like a fist holds a stick.
Ursula K. Le GuinWe like to think we live in daylight, but half the world is always dark, and fantasy, like poetry, speaks the language of the night.
Ursula K. Le Guin