Drawn Out - Courtney Huynh - Bog

Carolyn discovers a magic pen with which she can animate any object. What she draws gains form in the real world.
Katelyn her best friend suggests they use the pen to help people or to...Well she was not sure for what.
Sam, a not so smart, boy from the football team makes the mistake of getting angry at Carolyn and as he attempts to physically assault her, Katelyn uses the magic pen.
Sam runs full speed into the unicorn she draws and impales himself.
The next day at school, a very upset Carolyn gets sick and is sent home from school. Carolyn's attempts to destroy the magic pen are unsuccessful.
The next day in Katelyn's back yard she discovers that her best friend has been hiding her true identity to escape being teased as a dumb blonde.
They start a new relationship and agree that the pen must be destroyed.
Carolyn destroys the pen by breaking it in half. Simple. She hadn't tried anything so simple.