Coaches who work with young children probably have seen how even a few months could make a huge difference in children's development and drive so I very much doubt that your DD is in any bins.
![smile smile](/bb/images/graemlins/default/smile.gif)
I'm sure private music lessons are expensive in your area too but if your DD is sticking to piano, sooner or later, she'd need private lessons and I think sooner is often better than later if she is going to transfer to a different teacher down the road.
A good piano teacher who has worked with a number of highly talented students and he/she could be a wonderful source of support for your DD and for you. I'm learning so much from her piano teacher who has been teaching at a GT school for many years. She really gets DD's personality, temperament, asynchrony, stubbornness, and her need to explore on her own while still needing instruction. It's always hard to part with a good teacher especially if your child has bonded with her but sometimes, it's necessary.