The Sexy, The Shy and The Dragon

It's two days til Halloween and this girl has no costume. She looks online, but finds nothing that interests her. She then visits a few stores, until she come to an old-fashioned looking one. Everything in there is ancient, but also cursed, but the people who shop their neglect that. She finds a knight costume that fits her well and buys it. The suit has a dragon symbol on it that once the wearer wears it on Halloween it'll turn whoever into a dragon. On Halloween night, it turns her into a dragon and the only way to change back is to kill someone before the next night. The problem in that is that she is a very strong pacifist and refuses to kill anything. What will she do?