Dark Angel or Not- The Beginning (Book 1) (REWRITING)

Mia Rei knew she would become a angel. She knew she would be a dark angel, and not a good one at the age of 18. However, she was not a dark angel. She is the first of her kind in her family. Now her and her twin sister must go on a dangerous quest to go to a man they don't even know in under 72 hours just to learn...