I think it's so admirable that Amber was willing to stand on her convictions and not compromise her beliefs when it would have been so easy to. When you have famous singers and producers and have a chance to showcase your talent on such a large platform like American Idol, it tells so much about Amber's character and faith to walk away from it all. I know it couldn't have been easy, but I think she will definitely be rewarded for her decision in the end.
Edit - Sorry the video has been removed. Since this, Amber has done another interview about her Idol experience. Check it out here.