I am guessing she would score in the above average range
She is a very intelligent person, she just sucks at verbalizing, it is a very common trait, many of the great writers and philosophers in history were the same way. She is ruled by her emotional side of her brain, she -like many people- if given the chance to think about the answer, instead of off the cuff responses, would sound much more intelligent. I tend to trust people more, who hesitate to respond, and act as if they are thinking, more than those who quickly come off with a retort. I recommend it highly to everyone, it is a great barometer that is taught in many schools of business. She would appear wiser if she was able to just say - I really do not know, but I will know by the time it is necessary to know- people appreciate honesty, and there is nothing more honest than saying - I'm not 100% sure, and i can admit when i am wrong.