She has a very beautiful voice. At times I noticed a quality to her voice that I think would actually make her a great country singer. I think she sounds better than Amy.
I think what this show has proven to me more than anything else is not how much talent exists out there, I was already aware of that, but how important song writing is. A hit song that is catchy, fun, or creates an emotional connection is necessary for any quality singer to really showcase their talents. I also think it's why the past winners haven't been successful yet. Also, your song being featured in a commercial usually helps (I'm thinking of the Fun. song in that Superbowl commercial).