Have you read Founders at Work? The interviewing is exceptionally good. It feels like the founders are just telling their stories. JL's questions almost disappear, even though they're right there in the text. You don't achieve that level of invisibility as an interviewer without a deep understanding of what your interviewees are talking about.

There are probably other ways you're undercrediting her. I only mention this one because it's the one I have personal experience with.