...
"Trottingham! Woooo!" Pinkie cartwheeled all across the train, zooming about as a pink blur. Rarity demurely coughed into her hoof as she turned away right as Pinkie made her second trip around the interior (and over some poor stallion's tail.)
"Trottingham, indeed. You're hopeful she'll be there, Twilight?"
"It's the best I could think of. There aren't many magic schools that still teach transference. It's too risky. Princess Luna said Princess Celestia insisted she'd never seen the mare before, and CSGU is one of the only other places that cover it." Twilight frowned, turning to stare out the window. "Even if she doesn't end up being there, maybe we could find somepony who knows a mare that fits the bill."
"Chin up, darling." Rarity gave Twilight's shoulder a gentle pat. "We'll find this would-be princess and set everything back as it should be. All will be well."