Drop-dead brilliant, and used to it.
Where her habit has been: use of her intelligence to manipulate, or browbeat, or belittle others less capable of lightning-fast intellection.
There's a touch of evil there. She should use her powers for good. Instead she uses them selfishly, to foster what are at their core relationships of domination.
She wasn't ready for me. I called her out. She was shocked, and more significantly, she felt diminished.
Which is maybe an example of me failing to use my powers for good.