Wicked Never Waits (the School for Wicked Witches #2)

"After making her escape from the School for Wicked Witches, Ava has realized that it might be the right place for her, after all. But her return isn't triumphant -- if anything, she's more behind than ever. When things start to go very wrong at the school, Ava discovers she may be able to save the day... but only if she pairs up with Tinabella, her friend-turned-enemy. What's a young witch to do?"--Provided by publisher.