I think there is plenty of doubt about her supposed commercial qualifications.
So far as I'm aware there is no doubt about her having held a New Zealand CPL and Instructor Rating. I think you'll find evidence of her having held these qualifications in early posts on this thread.
One person who has posted on this thread does know.
I am pretty sure she did work at an Ardmore based flight training establishment for a short period of time. How long for and how much work she did is another question. There may be info on this in early posts in the thread, I don't remember and cannot be bothered looking.
I'd be surprised that anyone who has gained the qualifications necessary to earn a living from flying, would then deny ever having been a professional flyer?
I agree, and find this assertion very difficult to fathom.