Charas exist in their own stories and unless they exist in the same room (You could ask Jasmine at CRT about spending time with the other princesses for example) then the realities are separate. Maybe it's because I'm an old school roleplayer but I think of it in terms of books. Most were book characters before Disney adapted them. Someone from a book exists inside the confines of the pages and binding, the story is complete inside. Or as my friend would put it "No! You can't roll your Dungeons and Dragons paladin in our Vampire the Masquerade game, Jason!!!"