I want to know more facts about emily (mcdee's sister)
Emma is Earl's (his first name) older sister, and has dedicated much of her time and life to taking care of her brother.
She herself is neurotypical, but vehemently researches everything about neurodivergence and autism to make sure she takes good care of Earl and properly tend to his every need.
She sometimes visits the Specter Express just to see Earl at work, even if she actually doesn't need to take a train. Because of this, she's somewhat familiar with the other staff members too.
Unlike her brother, Emma can get physical if she wants/needs to.
Just like her brother, however, she too has a fascination for a type of vehicle: Hers being helicopters, although her interest is not as strong and prominent as Earl's.