I need a little help..?

So I'm doing a Challenge on Goodreads, an A-Z of Young Adult and I've got all my books picked out:

 

Aristotle and Dante Discover...

Beautiful Creatures

Crimson Frost

Distance Between Us (The)

Everblue

Forever Song (The)

Grasping at Eternity

Half Bad

Insurgent

Jordyn

Killer Frost

Lightning Thief (The)(Percy Jackson)

Midnight Frost

Never Let You Fall

Open Minds

Pure

Queen (The)

Raging Star

Stone Cold Touch

Trouble with Spells (The)

Unremembered

Vanish

Wither

Xoe

 

apart from Y and Z.

 

I can't find any books that I might want to read in YA that start with a Y or a Z. Can you help me by suggesting books that start with those letters? They can be start with The or A etc.