This is a good point and I will remember it in the future.
Having consulted a number of third parties on this matter, I am prepared to retract my previous statements in this conversation.
This girl really did crush her performance, and I 100% agree that she performed better than many adults would have. In comparing her performance to that of an adult’s I was being dismissive, despite that not being my intent.
It was 100% my mistake to bring it up and normally I wouldn’t. I’ll be more mindful in the future about assuming this type of thing about others.