The rolling suddenly stopped, Bitterroot on the bottom, the pony pinning her to the ground. Bitterroot beat her wings to try for some leverage, to no effect. She pulled on the pony’s neck with one leg in a desperate attempt to throw her off, but the pony was too heavy. Bitterroot was desperate for breath. With her free hoof, she scrabbled at the pony’s goggles and smooth head, trying to-