I'm struggling to decide whether or not my story should be based in its own world separate from earth or be reached through a portal on earth. I know it would come down to which fit my storyline better. The basic storyline would be a female character finding out her mother was a royal to this country and the family returning. But I don't know if it would be more believable to sell her confusion with the country if she was an American going through a portal to another land. Or if she already lived in this mystical land.