A dark hearts change

i was walking to class when i noticed something out of the corner of my eye something unusual. i looked away from my path to class then boom, i ran into someone, a girl, a dark hair blue eyed girl who ive never seen before, she was quite small. "im sorry, i wasn't paying attention, forgive my clumsiness"she said apologetically. " yea well you should start paying more attention" i said back. "your right, im ariel by the way, it was nice meeting you". she smiled at me and whit that she was gone, and i felt something, strange happen.