Well, looks like the next time the askbox goes up, we gonna make sure that RD gets that courage. And shell get it once she accepts her new situation and not just lives with and dwells on it. And for that we need to encourage her or get some new meaning in life (Wonderbolts while being blind is a pretty no-go) or find her something to distract herself.
My thoughts are to let her become an author, she has the fantasy as the show showed us, Twilight could write down the story adn gramatical correct everything, etc. while RD thinks up some amazing adventure.