Cordelia & Mer and the Witches of Ice: Book One: Gloom (Volume 1)

You're a witch. 
It's the dead of night. 
You're scared. 
You might even be found out. 
Suddenly, a flash of light dazzles you. 
A glowing translucent book has appeared before your eyes. 
You read its ice-like pages. 
They foretell the end of your magic ...even your life. 

What on earth are you going to do?