I don’t get intellectual stimulation from my SO usually, to whom I’m married. Originally, I thought she was kinda dumb. Turns out, the stuff I find fascinating she finds intensely boring. And the stuff she finds fascinating I find absolutely disgusting. Like I’m getting an MBA and she’s getting a masters in midwifery.
For you, giving her a chance to talk about the things she finds interesting might help you discover where her strengths are, where she feels comfortable.