At the moment i don't have a name for her yet. 

As a young filly, she gained some powerful magic that forever changed her life. She became a very important person back then. She had a friend, who later became her guard who was just like her. They were very close. Together, they tried to put a stop to the evil in their world. They almost succeeded, but then…… a tragic incident happened.

You will have to be able to convincingly cry for this character. She does this often in the first few scenes of the movie. Her voice should be elegant, strong, and kind.