Rainbow Feather, flash forward to the wonderbolts!
She's a reserve member, she'll never be a full member let alone Captain like Dash... but reservists *do* get called up to fill in! She even has a minor fan following.
And who's she winking at in the crowd? It is somepony in specific, I'll say that much ^^
Art by HazuraSinner
Rainbow Feather's story and question-answering is at Rainbow Feather Replies
, and she's the daughter of Rainbow Dash and Gilda!
The Wonderbolts and My Little Pony: Friendship is Magic belong to Hasbro