Wonderful story, and one I can relate to.
My first, current, and only wife grew up as her dad's mechanic working on the Spitfires he raced. When later he switched to showroom stock she learned to work on Datsuns and Toyotas. She also joined him on the track... racing until her funds ran out.
To this day people are amazed that I have never had any interest in driving a race car but my wife can and did. It's nice to come in from working on a car and have a discussion with someone who understands and can offer suggestions.