Emily is a friendly, cute, sixteen year old girl from Amity. She chose Dauntless as her new faction to get away from her family, but she's not so sure she belongs in Dauntless. She's not good at shooting a gun and is horrible with throwing knifes.
This is where Eric comes in. He finds a perfect opportunity to use her and own her, so he takes it. He makes a deal with her, but once she accepts his offer there is no turning back. Now she's free from her family, but stuck with Eric. And quit frankly, she doesn't know which one is worse.