Back Cover Copy: Help!

I need some help. I've been working on a young adult urban fantasy, Aura, for what seems like for-ev-er. I think it's finally nearing full completion and I need to get the back cover copy ready. The back copy is meant to entice readers and make them want to read the book.

Here it is:

After moving from one city to the next all of her life, Crystal Scott finally feels like she belongs in Silver City, Colorado. She has the lead in the high school play, a best friend, and a gorgeous boyfriend. With her senior prom only a few days away, everything is perfect--or so she thinks. 

Because nothing is as it seems.

Vincent Crandall, the human host for a demon with an insatiable thirst for power, learns that Crystal possesses an extraordinary aura with enough Light to stop him and his plan to rule Silver City, and eventually the world. Vincent sends in operatives from his demon army to destroy Crystal's aura on prom night and she is suddenly thrust into an on-going battle with demons. When Vincent kidnaps her parents, Crystal must learn to control the power within her—a power directly linked to her virtuous choices—before he kills her parents and harnesses her Light for himself.

What do you think? Would it make you want to read this book? Does it grab you? How can I improve it?

Feel free to shred it.

Thanks for your help and your support!