@Background Pony #20A2  
That would actually be a very interesting story. She could easily be Blueblood’s twin, even the male one’s. They look very similar, and after all, we know from the cake twins that Equestrian twins can belong to two different pony races. Maybe she had a fight with her family, ran away from home and became a Wonderbolt. No one in the team knows she’s actually royalty. Her family knows, but they never tell anyone because they don’t want anyone to find out that a ‘princess’ (she has to be one if she’s Blueblood’s twin) became a mere air show performer.

Twins?