Without any further information, it is, of course, a bit difficult to say, but there is certainly no harm in submitting an application, I would think. (What's the worst thing that can happen? They say no, and your situation is unchanged. Then maybe you get more data, and consider re-submitting.) But given that you are actually in the midst of the testing process, you might want to consider waiting until you have that additional data, especially since it is likely to either support the existing scores, or support the suspicion that her actual cognition is higher. Either way, you will have data to support the conclusion.
