To figure out someone's religion, we need to know:
* Which Emily are you talking about? There are many famous Emilys (like Emily Dickinson, Emily Blunt, etc.).
* Is this a fictional character? If so, the information might be in the book or show.
* Do you have any other clues? Do you know anything about their family background, beliefs, or practices?
Once you give me more information, I can help you figure out Emily's religion!