Isabella Volturi lives a kind of princess life. Not with all the true love and happiness. It was the idea that she was locked in a tower. It really wasn't a tower, but the concept is still the same.
She escaped as much as she could without actually running away. She took off to the forest not only to hunt, but to get away and think about it all. Keeping that in mind, the animals near her rock aren't scared of her for she hunted several miles out. She thought of the idea of running away, though who could really run away. The Volturi are vampires. The best of the best with their mind reading leader, their amazing tracker, and the most powerful person of all, their person that could erase ties and make new ones. She knew she looked old enough to get a drivers license and could get her name on it, Isabella Volturi, but it was too noticeable. She could change her name, that's it!
She ran to the search party trying to find her, joined them, and followed them back to her father. Yes, father probably biologically. She's not a vampire. You can call her half 'n half. Now back to a serious matter, she is half human half vampire.
On her way back she noticed a handsome man that practically drawn her to him.