Daring Do's VA is the Blonde girl (Beth?) on Kid vs Kat.
I looked for any "Beth" characters and found nothing. Need more details.
Perhaps you're thinking of "Fiona Munson"? Interestingly, Tabith St. Germain and Cathy Weseluck both voiced characters on that show.
her voice sounded similar to Ashleigh Ball's, but there isn't a confirmed voice.