No, I wouldn't say anything to the parents, that's the doctor's job when they do the height and weight charts at the well baby checkups. You sound like you are doing a great job cheering her on for her accomplishments and feeding healthy foods.

I also have a treat once a week after lunch, either for a birthday, holiday celebration or special day. I always make it a special thing so the children know it is not to be expected all the time. My treats are one cookie or 2 gummie worms, always very small.

Personally, sweets are my downfall and I crave them every evening and I don't want to contribute to any child running into my bad habits.