It’s time to get back on the Summer Camp Island theory wagon. After thinking a lot about Spirit Balls from season 4, I’ve made a realization: Emma was originally Mildred.
If you don’t remember Mildred then you’re probably not alone: she was only ever mentioned in one episode of Summer Camp Island, called Meeting of the Minds from back in season 2.
Still, Spirit Balls gave us a lot of hints about Emma’s true nature, and I fully believe that through the art of soul transfer Mildred became who we now know as Emma. When Summer Camp Island will reveal this to us I don’t know, so we’ll have to keep watching.