"She went missing, two years back. It was on the news and everything. Most people just thought she skipped town."
—Emmett to Michelle
Not much is know about Brittany, execpt that she was a classmate with Emmett's sister. At some point in her life she was kidnapped by Howard Stambler and taken to his bunker to live with him, being forced to assume the role of his daughter Megan. She tried to escape from the bunker, writting HELP on the bunker hatch. But she was killed by Stambler.
One of her earrings and the message writen on the hatch were later discovered by Michelle, with Emmett confirming to her that the girl on the picture wasn't Megan, and deduced that Howard killed her.