The corner really doesn't look bad to me. I mean it's not even noticeable in the whole view of the bag. The 2 big dark spots just look like a shadow from her hand taking a pic? But the dirt looks like it could get cleaned up with some Apple Garde. I have this bag and the corners get dirty like that easily, but Apple Garde always removes it all and makes it look brand new... Maybe ask her if she has ever tried cleaning it?