Wow.... being that I am a photographer and an artist who likes to enter competitions... I would have been unable to let that pass the first time around. In my book that is a serious offense. Theft and plagiarism? Friends don't use you... I'd be wondering what else she's done? She did none of the work for that picture. You did. So technically? Those are your ribbons. I'd ask her to fork all of them over to you. After all, it was your picture and your work that won, not hers.