+2 SD equates to an IQ of 130 (U.S. norms) on tests like the WAIS. I personally think she’s 138 (which I round to 140), but 130 is still extremely high (top 2% of the U.S. population).

He had a lot more to say about this and many other topics, but I’ll save that for another day. Meanwhile here’s an interview he did with Curt Jaimungal: