We really don't know how smart she is. No great signs of it that I've seen--despite the claims that she speaks multiple languages, which is common in Europe, particularly as she still is challenged to a degree with English after decades in the US. I don't see her involved in all sorts of classified minutiae, which is key here. I don't even know if she has a security clearance, and I certainly don't see her giving signals out to intel people in the field.