There was a show on Disney channel or Disney XD around 2009.
I think it was an anime styled and futuristic. this girl raced what seemed to be space ships and had many friends.
I'm not sure if she had a troubled past or not.
Notably, the show is in an anime style, the primary character (Molly) has red hair and there are many races seen. She also has an extensive fan-base and several friends.
The description on Wikipedia closely mirrors your own: