This story is a sequel to Sister

Twilight wanted to help Spike be happy, and heal his broken heart about not knowing who his parents were. She became a teenage dragon to make him happy and bring a smile on his face. She does like this new look and transformation, but she realizes that being a dragon is not as easy as it would sound it would be. She asks for a certain friend that she knew to help her out with it, Princess Ember, the new dragon lord of the dragon kingdom, far from Equestria to help her out with that. Can Ember help Twilight be a better pony-turned-dragon?

Rarity explains to Sweetie Belle what the Cutie Mark Crusaders saw when they walked in on her and Applejack.

It was totally innocent. Really!

There is now a Spanish translation of this story, courtesy of Spaniard Kiwi