You could always keep the track name, include aspects of it, or change completely.
Some including it could be:
Bella the Beauty
Bell of the Ball
Dixie Dancer (kinda like the first one)
Some without it could be:
Wisher (or Wishing Star, since she has a star)
There's a lot more I could think of, but I don't know how good those are so I'll stop for now. :)
Don't judge someone's horse or skill because they don't compete or work with a trainer.
Sometimes they're the most in tune with each other.