Her eyes widen! "Oh, you lovelies... and then she recoils. People! Human people! "Oh no, no no...." Hide - how to hide? It's a wide open space - she could run... COULD she run faster than a jeep? Without them seeing her? She flattens down into the grass, trying to minimize her profile... and something sparks. "I'm not a monster... don't see me... I'm just a... a girl. Not a horse, just a normal, human girl..." And her form wavers... her legs - her sneakers!
She moves a foot - and her hoof clatters against a rock. Still there... but somehow, she looks "normal" again...