This article is about a subject that is from official sources but is not considered canon.
Emma worked with Sam when he first travelled to the United Kingdom. They parted ways and never found a way to keep in touch with each other. When Sam and Dean later encountered a Selkie infestation, Sam encountered Emma once more, albeit with a different hair color. After several encounters, Emma revealed that she was a Selkie herself, and she doubled as a hunter in order to prevent her fellow monsters from destroying the town she had lived in. Emma helped the Winchesters defeat the infestation. However, in order to truly end the infestation, she knew she had to die too and committed suicide. Before she died, she thanked Sam for freeing her.