Talk:My Little Pony Equestria Girls/@comment-69.159.40.211-20130617165034/@comment-26973802-20140317224054

Best I can gather, she wanted the crown because of her ambition for power fuelled by the cruelty in her heart, and when she put it on, it caused her cruelty and dark side to manifest into a demon to possess her. The demon form is her evil side, her innermost self, brought out by the crown