I am glad that you told her openly and honestly what you were thinking.
I currently have a 2 1/2 year old that is "potty training". He has success on the potty (will pee and has pooped too), but NOT ONCE has he been the one to initiate it. When asked if he has to go, it's always "No." But if I take him, he will go almost without fail.
At first mom and dad wanted me to take him about every hour. I tried it, since he was the only one I had in care other than my own kids. But I found that if I didn't catch him with the right timing, he would pee a little in the pull up, and then pee a little in the potty. Essentially he was peeing small amounts every half hour or so. That can't be good??
So I am asking him, and taking him less often. I feel like I want to say something to mom and dad, but is it overstepping? How do I offer my "helpful advice", LoL?