Fanciful Eden

The story of a young teen, Camilla, going through some serious issues. Many people think she's gone mad, as she claims to go into a different dimension. She claims to go to this place called Eden, filled with a variety of colors that complement each other. Colors that don't even exist here. She sees animals that haven't, nor would have existed here on Planet Earth. She claims to see other beings that look nothing like humans.
Is this just another case of schizophrenia? Or is this another realm that no one has ever visited. Anyone can visit Eden, the only way to do it is by it in your thoughts.