I love Dash's look of pride. I would have put that freak in a cell with high walls that are transparent, smooth and non-adhesive, with no ceiling savexcept that of the complex as a whole. That way, it is literally Scootaloo's inability to fly that is keeping it captive: if it were a real pegasus, it could leave whenever it wanted! I would then wait until it realises this and breaks down sobbing in despair and shame, and then burn its scooter in front of it while pointing at it and laughing.