Scootaloo had been without a family for a very long time. She has never told anypony about her situation. It isn't until a certain purple unicorn learns about her origins that she discovers what a family truly is.
Lauren Faust wakes up one day in Equestria and guess what? Celestia and Luna tell her that A: she's the queen and B: they're her daughters. How will she cope? Will she stay or try to find a way back? Oh and she's an alicorn, of course.