Hopefully, you will find a play based preschool that you like and fits. Of course she will know all the preschool topics, but hopefully she'll have fun too.
For my ds, the "teaching" was informal and he was allowed to do other things during worksheet time. Also, he was allowed to read to his classmates and helped the Spanish teacher teach her class. The school and wonderful teachers did so many fun projects and lots of playtime. It was truly great!