A photo can ruin the image she has conjured up of you. This is one of the major problems with long-distance meeting. People can accept you at first glance, but a photo breaks everything they thought they knew, it contradicts what they've learned. It's difficult to augment it into their imagination.
I think you should put some time into taking a well-lit photo where you look neutral and as like as you do every day. If you tell the truth with the photo in the same way you told the truth when you spoke, then morally you should have no problem.