Diane started howling as fur spread all over her body. Her face extended into a wolf's muzzle, her teeth growing into huge fangs. Even though she was covered with hair, she still retained her own.
Her hands and feet grew into huge clawed paws. While her hands were still prehensile, with opposable thumbs, her feet were now too big for any on her shoes to fit.
"D-diane!" gasped Tina "Y-you're a werewolf!!"
"Howll..how can this be??" gasped Diane, finding her voice again as she examined her body "I haven't been bitten, and it's nowhere near the full moon!"