Nice you just gave her the best addiction in the world to have racing way to go dad. I been racing oval asphalt since I was 6 started in a outlaw bandolaro class our top speeds was around 75-85 mph depends on the track. When I turned 8 ran legends then 10 I was racing super stocks with my mom at the track my parents use to own with 510 plus hp lol then after a year of that I moved up to the big half mile oval in superstocks. I'm 30 now raced in every class you can think of on dirt and asphalt ovals if it wasn't for parents getting me in racing I wouldn't have got to experience a 900 plus hp wing asphalt sprint car on huge half miles never lifting at 150 mph or run a arca car at Daytona and dega so keep it up she will have a great fun life