For the record, the conclusion I have come to is that she likely has aniridia (
http://en.wikipedia.org/wiki/Aniridia). In the video i saw of her (youtube.com/watch?v=Q6ju4HeobGM) she is wearing sunglasses and has trouble with her eyes when she takes them off, likely due to the sensitivity to the light. With aniridia, the eyes lack an iris meaning they cannot adjust to changes in light. If you look at the eyes, they appear to be like black holes. Unfortunately, there are no close up images of her eyes to make a more firm conclusion.
The funny thing is, if God was apparently responsible for this, why wouldn't he grant her perfect vision and not just slightly improved vision where she still has trouble with light? The healing that happened in the Bible always seemed to be complete.
You provided hearsay accounts, hardly firm evidence. And just "telling" something isn't an argument. You can't just say "oh some things are just unexplainable, therefore God." That doesn't fly, you are putting your god in a box that says that stuff we don't know must be God. But as we learn more, he disappears. His box has gotten much smaller since the beginning of time as we've discovered more.