7DSJ sidestory. In the wake of Sunset's return and permanent departure from Equestria, Celestia wonders if she did enough for the unicorn that was like a daughter to her.
The Foal Protective Services finally managed to separate mother and daughter, having spent years in waiting for Ditzy to fumble. Now Dinky is stuck with foster parents, and everything continues to go downhill from there.
King Sombra kidnapped Princess Skyla from her crystal cradle and took her to a faraway land. She was meant to be his dark legacy. She was never meant to become his daughter.
Princess Luna proposes to her sister to star a new colony outside of Equestria, but Princess Celestia forbids it. Luna decides to carry on with her plan anyway.